当前位置: 首页 > >

2010年福建省三明市中考数学试卷(word版含解析答案)

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l e arni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs or pti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside de vel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would n ot" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conf ormist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put fle xibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

一、选择题 1.比﹣3 大 2 的数是( ) A.﹣5 B.﹣1 C.1 D.5 2.下列运算正确的是(
2 2 8 2


4

A.a+2a =3a B.a ÷a =a

C.a ?a =a

3

2

6

D. (a ) =a

3

2

6

3.不等式组

的解集在数轴上表示正确的是(



A. D.

B.

C.

4.若两圆的半径分别为 5 和 2,圆心距是 4.则这两圆的位置关系是( A.外离 B.外切 C.相交 D.内切



5. 截止 2010 年 4 月 20 日 23 时 35 分, 央视“情系玉树, 大爱无疆”赈灾晚会共收到社会各界为玉树捐款 2 175 000 000 元,用科学记数法表示捐款数应为( ) 10 9 8 7 A.2.175×10 元 B.2.175×10 元 C.21.75×10 元 D.217.5×10 元 6.下列成语所描述的事件是必然事件的是( ) A.水中捞月 B.守株待兔 C.水涨船高 D.画饼充饥 7. (林老师给出一个函数,甲、乙、丙三位同学分别指出了这个函数的一个性质: 甲:函数的图象经过第二象限; 乙:函数的图象经过第四象限; 丙:在每一个象限内,y 值随 x 值增大而增大. 根据他们的叙述,林老师给出的这个函数可能是( ) A.y=﹣3x B.y=﹣ C.y=x﹣3 D.y=x ﹣3
2

8.如图,在 Rt△ ABC 中,∠C=90°,∠B=30°.AB 的垂直平分线 DE 交 AB 于点 D,交 BC 于点 E,则下列结论不 正确的是( )

A.AE=BE

B.AC=BE

C.CE=DE

D.∠CAE=∠B

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct propo sed t o focus on the party's a dvanced nature a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n c ontent of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng-orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summon a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the b asis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self-a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Str engthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

9.如图是一个几何体的三视图,则这个几何体的全面积是(



A.14π B.24π C.26π D.36π 10.如图,在 3×3 正方形网格中,已有三个小正方形被涂黑,将剩余的白色小正方形再任意涂黑一个,则所得黑色 图案是轴对称图形的概率是( )

A.

B.

C.

D.

二、填空题 11.化简: 12.方程

=

_________ . 的解为 _________ .

13.如图,梯形 ABCD 中,AD∥BC,AB=DC,∠ABC=75°,DE∥AB 交 BC 于点 E,将△ DCE 沿 DE 翻折,得到 △ DFE,则∠EDF= _________ 度.

14. 一组数据按从小到大的顺序排列为 1, 3, 5, x, 7, 9. 这组数据的中位数是 6. 则这组数据的众数为 _________ . 15.如图是小玲设计用手电来测量某古城墙高度的示意图.在点 P 处放一水平的平面镜,光线从点 A 出发经平面镜 反射后,刚好射到古城墙 CD 的顶端 C 处.已知 AB⊥BD,CD⊥BD.且测得 AB=1.4 米,BP=2.1 米,PD=12 米.那 么该古城墙 CD 的高度是 _________ 米.
Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

三、解答题 (2)解方程: (x﹣1) +2x﹣3=0. 18. (2010?三明)如图,在△ ABC 中,点 D、E、F 分别是边 AB、BC、CA 的中点. (1)求证:四边形 DECF 是平行四边形; (2)若 AC=BC,则四边形 DECF 是什么特殊四边形?请说明理由.
2

19. (2010?三明)九年级(1)班的小亮为了了解本班同学的血型情况,对全班同学进行了调查.将调查数据绘制 成如下两幅不完整的统计图表.请你根据图表提供的信息回答下列问题: (1)九年级(1)班共有学生 _________ 人,其中 a= _________ ; (2)扇形统计图中,AB 血型所在扇形的圆心角为 _________ 度; (3)已知同种血型的人可以互相输血.O 型血可以输给任何一种血型的人,其他不同血型的人不能互相输血.小 红是九年级(1)班的 B 血型学生.因病需要输血.在本班学生中(小红除外)任找一人,求他的血可以输给小红 的概率. 血型 A B AB O 人数 a 13 5 18

Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na.

to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

3

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

2010 年福建省三明市中考数学试卷
参考答案与试题解析
一、选择题(共 10 小题,每小题 4 分,满分 40 分) 1. (2010?三明)比﹣3 大 2 的数是( ) A.﹣5 B.﹣1 C.1 D.5 考点:有理数的加法。 分析:有理数运算中加法法则:异号两数相加,取绝对值较大数的符号,并把绝对值相减. 解答:解:﹣3+2=﹣(3﹣2)=﹣1.故选 B. 点评:解题关键是理解加法的法则,先确定和的符号,再进行计算. 2. (2010?三明)下列运算正确的是(
2 2 8 2 4 3 2


6 3 2 6

A.a+2a =3a B.a ÷a =a C.a ?a =a D. (a ) =a 考点:同底数幂的除法;同底数幂的乘法;幂的乘方与积的乘方。 分析:根据同底数幂的除法、同底数幂的乘法和幂的乘方的性质求解后利用排除法求解. 2 解答:解:A、a 与 2a 不是同类项不能合并,故本选项错误; 8 2 8﹣2 6 B、应为 a ÷a =a =a ,故本选项错误; 3 2 5 C、应为 a ?a =a ,故本选项错误; 3 2 6 D、 (a ) =a ,正确. 故选 D. 点评:本题主要考查幂的运算性质,需要熟练掌握.

3. (2010?三明)不等式组

的解集在数轴上表示正确的是(



A.

B.

C.

D. 考点:在数轴上表示不等式的解集。 分析:不等式组的解集为 x<﹣3,所以 A 是正确的. 解答:解: 由第一个不等式得:x<﹣3; 由第二个不等式得:x≤﹣1. 所以不等式组的解集为 x<﹣3. 故选 A. 点评:不等式组解集在数轴上的表示方法:把每个不等式的解集在数轴上表示出来(>,≥向右画;<,≤向左画) , 数轴上的点把数轴分成若干段,如果数轴的某一段上面表示解集的线的条数与不等式的个数一样,那么这段就是不 等式组的解集.有几个就要几个.在表示解集时“≥”,“≤”要用实心圆点表示;“<”,“>”要用空心圆点表示. 4. (2010?三明)若两圆的半径分别为 5 和 2,圆心距是 4.则这两圆的位置关系是( A.外离 B.外切 C.相交 D.内切 考点:圆与圆的位置关系。 分析:本题主要考查两圆位置关系的判定,确定 R﹣r、R+r、d 三者之间的关系即可. 解答:解:由题意知,
Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国



This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

圆心距 5﹣2<d<5+2, 故两圆相交, 故选 C. 点评:本题主要考查圆与圆的位置关系,①外离,则 P>R+r;②外切,则 P=R+r;③相交,则 R﹣r<P<R+r; ④内切,则 P=R﹣r;⑤内含,则 P<R﹣r. 5. (2010?内江)截止 2010 年 4 月 20 日 23 时 35 分,央视“情系玉树,大爱无疆”赈灾晚会共收到社会各界为玉树捐 款 2 175 000 000 元,用科学记数法表示捐款数应为( ) 10 9 8 7 A.2.175×10 元 B.2.175×10 元 C.21.75×10 元 D.217.5×10 元 考点:科学记数法—表示较大的数。 专题:应用题。 分析:科学记数法的表示形式为 a×10 的形式,其中 1≤|a|<10,n 为整数.确定 n 的值时,要看把原数变成 a 时, 小数点移动了多少位,n 的绝对值与小数点移动的位数相同.当原数绝对值>10 时,n 是正数;当原数的绝对值<1 时,n 是负数. 9 解答:解:将 2 175 000 000 用科学记数法表示为 2.175×10 .故选 B. n 点评:此题考查科学记数法的表示方法,科学记数法的表示形式为 a×10 的形式,其中 1≤|a|<10,n 为整数,表示 时关键要正确确定 a 的值以及 n 的值. 6. (2010?三明)下列成语所描述的事件是必然事件的是( ) A.水中捞月 B.守株待兔 C.水涨船高 D.画饼充饥 考点:随机事件。 分析:必然事件就是一定会发生的事件,依据定义即可解决. 解答:解:A、水中捞月,是不可能事件,故不符合题意; B、守株待兔,是随机事件,故不符合题意; C、水涨船高,是必然事件,符合题意. D、画饼充饥,是不可能事件,故不符合题意. 故选 C. 点评: 解决本题需要正确理解必然事件、 不可能事件、 随机事件的概念. 必然事件指在一定条件下一定发生的事件. 不 可能事件是指在一定条件下,一定不发生的事件.不确定事件即随机事件是指在一定条件下,可能发生也可能不发 生的事件. 7. (2010?三明)林老师给出一个函数,甲、乙、丙三位同学分别指出了这个函数的一个性质: 甲:函数的图象经过第二象限; 乙:函数的图象经过第四象限; 丙:在每一个象限内,y 值随 x 值增大而增大. 根据他们的叙述,林老师给出的这个函数可能是( ) A.y=﹣3x B.y=﹣ C.y=x﹣3 D.y=x ﹣3
2 n

考点:二次函数的性质;一次函数的性质;反比例函数的性质。 分析:采用排除法:答案 A 显然不满足丙的条件,而 C 不满足甲条件,D 则不满足丙条件,只有 B 是满足甲、乙、 丙条件. 解答:解:A、y=﹣3x,图象经过二、四象限,y 值随 x 值增大而减小,错误; B、y=﹣ ,图象经过二、四象限,在每一个象限内,y 值随 x 值增大而增大,正确; C、y=x﹣3,图象经过一、三、四象限,错误; 2 D、y=x ﹣3,抛物线,图象经过四个象限,错误; 故选 B. 点评:本题考查了一次函数、反比例函数、二次函数的图象位置及其增减性.
Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na.

to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

5

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

8. (2010?三明)如图,在 Rt△ ABC 中,∠C=90°,∠B=30°.AB 的垂直平分线 DE 交 AB 于点 D,交 BC 于点 E, 则下列结论不正确的是( )

A.AE=BE B.AC=BE C.CE=DE D.∠CAE=∠B 考点:线段垂直平分线的性质;角平分线的性质。 分析:根据线段垂直平分线的性质,得 AE=BE;根据等角对等边,得∠BAE=∠B=30°;根据直角三角形的两个锐 角互余,得∠BAC=60°,则∠CAE=∠BAE=30°,根据角平分线的性质,得 CE=DE. 解答:解:A、根据线段垂直平分线的性质,得 AE=BE.故该选项正确; B、因为 AE>AC,AE=BE,所以 AC<BE.故该选项错误; C、根据等角对等边,得∠BAE=∠B=30°;根据直角三角形的两个锐角互余,得∠BAC=60°. 则∠CAE=∠BAE=30°,根据角平分线的性质,得 CE=DE.故该选项正确; D、根据 C 的证明过程.故该选项正确. 故选 B. 点评:此题考查了线段垂直平分线的性质、等角对等边的性质、角平分线的性质.由已知条件结合各知识点得到结 论对选项逐一验证时解答本题的关键. 9. (2010?三明)如图是一个几何体的三视图,则这个几何体的全面积是( )

A.14π B.24π C.26π D.36π 考点:由三视图判断几何体。 2 分析:易得此几何体为圆锥,圆锥的全面积=底面积+侧面积=π×底面半径 +π×底面半径×母线长,把相关数值代入 即可求解. 解答:解:利用三视图可获取此几何体是圆锥,其底面直径是 4,母线长为 5, 展开后为侧面为扇形,扇形半径为 5,弧长为 4π, ∴侧面积为 10π, 底面是圆, ∴面积为 4π, ∴全面积为 14π, 故选 A. 点评:本题考查圆锥的全面积的计算公式,关键是得到该几何体的形状. 10. (2010?三明)如图,在 3×3 正方形网格中,已有三个小正方形被涂黑,将剩余的白色小正方形再任意涂黑一个, 则所得黑色图案是轴对称图形的概率是( )

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

A.

B.

C.

D.

考点:轴对称图形;几何概率。 专题:网格型。 分析:根据题意,涂黑一个格共 6 种等可能情况,结合轴对称的意义,可得到轴对称图形的情况数目,结合概率的 计算公式,计算可得答案. 解答:解:根据题意,涂黑每一个格都会出现一种等可能情况,共出现 6 种等可能情况, 而当涂黑左上角和右下角的黑块时,不会是轴对称图形,其余的 4 种情况均可以, 故其概率为 = ; 故选 D. 点评:此题考查几何概率的求法:如果一个事件有 n 种可能,而且这些事件的可能性相同,其中事件 A 出现 m 种 结果,那么事件 A 的概率 P(A)= .

二、填空题(共 6 小题,每小题 4 分,满分 24 分) 11. (2010?三明)化简: = . 考点:二次根式的性质与化简。 分析:63 可分解为 9×7,9 可开出 3,从而得结果. 解答:解: . 点评:二次根式的化简,就是使根号里不存在能开方的因式或因数. 12. (2010?三明)方程 的解为 x=﹣4 .

考点:解分式方程。 专题:计算题。 分析:首先把方程两边同时乘以 x(x﹣2) ,转化为 3x=2x﹣4,然后根据解整式方程的方法可以求出方程的根. 解答:解:∵ ,

∴3x=2x﹣4, ∴x=﹣4. 当 x=﹣4 时,x(x﹣2)≠0, ∴原方程的解为 x=﹣4. 故填空答案:x=﹣4. 点评: (1)解分式方程的基本思想是“转化思想”,把分式方程转化为整式方程求解. (2)解分式方程一定注意要验根. 13. (2010?三明)如图,梯形 ABCD 中,AD∥BC,AB=DC,∠ABC=75°,DE∥AB 交 BC 于点 E,将△ DCE 沿 DE 翻折,得到△ DFE,则∠EDF= 30 度.

Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na.

to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

7

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

考点:翻折变换(折叠问题) 。 分析:由条件知梯形 ABCD 为等腰梯形,∠C=∠ABC=75°,∠CDA=105°,由 DE∥AB、AD∥BC 知四边形 ABED 为平行四边形,∠ADE=B=75°,所以∠EDC=105°﹣75°=30°,△ DFE 由△ CED 折叠得到,所以∠FDE=∠EDC=30°. 解答:解:∵梯形 ABCD 中,AD∥BC,AB=DC,∠ABC=75° ∴∠C=∠ABC=75°,∠CDA=180°﹣75°=105° 又 DE∥AB、AD∥BC ∴四边形 ABED 为平行四边形, ∴∠ADE=B=75°,∠EDC=105°﹣75°=30°, ∵△DFE 由△ CED 折叠得到, ∴∠FDE=∠EDC=30° 点评:本题较为简单,条件比较充分,此类题目可由充分的条件得出相联系的结论,看这些结论哪些与翻折有关, 有怎样的关联,从而得出答案.其中关键是找到结论中的联系. 14. (2010?三明)一组数据按从小到大的顺序排列为 1,3,5,x,7,9.这组数据的中位数是 6.则这组数据的众 数为 7 . 考点:中位数;众数。 分析:这组数据一共有六个数据,中位数必为最中间两数的平均数,从而求出 x 的值,进而得出数据的众数. 解答:解:这组数据已经按从小到大的顺序排列好,中位数为(5+x)÷2=6,解得 x=7,在这组数据中,7 出现的此 时最多,则这组数据的众数为 7. 故填 7. 点评:考查了众数和中位数的计算方法,注意找中位数的时候一定要先排好顺序,然后再根据奇数和偶数个来确定 中位数,如果数据有奇数个,则正中间的数字即为所求,如果是偶数个则找中间两位数的平均数. 15. (2010?三明)如图是小玲设计用手电来测量某古城墙高度的示意图.在点 P 处放一水平的平面镜,光线从点 A 出发经平面镜反射后,刚好射到古城墙 CD 的顶端 C 处.已知 AB⊥BD,CD⊥BD.且测得 AB=1.4 米,BP=2.1 米, PD=12 米.那么该古城墙 CD 的高度是 8 米.

考点:相似三角形的应用。 专题:跨学科。 分析:由光学知识反射角等于入射角不难分析得出∠APB=∠CPD,再由∠ABP=∠CDP=90°得到△ ABP∽△CDP, 得到 = 代入数值求的 CD=8.

解答:解:∵∠APB=∠CPD,∠ABP=∠CDP, ∴△ABP∽△CDP ∴ = 即 =

解得:CD=8 米. 点评:本题考查了直角三角形的有关知识,同时渗透光学中反射原理,注意到相似三角形,解决本题关键.

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

16. (2010?三明)观察下列有序整数对: (1,1) . (1,2) , (2,1) . (1,3) , (2,2) , (3,1) (1,4) , (2,3) , (3,2) , (4,1) . (1,5) , (2,4) , (3,3) , (4,2) , (5,1) . … 它们是按一定规律排列的,依照此规律,第 10 行从左到右第 5 个整数对是 (5,6) . 考点:规律型:数字的变化类。 专题:规律型。 分析:有序数对的第一个是列数,第二个用行数减去列数加 1.本题可以先从行再从第 10 行则第一个序整数(1, 10)再再从左到右第 5 个,每一行的有序整数的第二个数从左相右依次逐减 1,而第一个数递减 1,从而得到. 解答:解:由题意得,第 10 行的第一个有序整数对位(1,10) 由题意从左到右的整数对的第一个数依次递增,第二个数递减 1 ∴左向右第 5 个整数对为(5,6) 点评:通过观察,分析、归纳并发现其中的规律,并应用发现的规律,解决问题是应该具备的基本能力.本题关键 是发现数字的增和减. 三、解答题(共 8 小题,满分 86 分) 2 2 2 2 2 17. (2010?三明) (1)请从三个代数式 4x ﹣y ,2xy+y ,4x +4xy+y 中,任选两个构造一个分式,并化简该分式; 2 (2)解方程: (x﹣1) +2x﹣3=0. 考点:解一元二次方程-直接开平方法;分式的混合运算;分式的化简求值。 分析: (1)根据所给代数式的特点,三个代数式分解因式后都有公因式,因而可以任意进行组合. (2)对方程进行变形后,再应用直接开平方法解答. 解答:解: (1)本题答案不唯一. (2 分)

=

(6 分)

=

(8 分)



=





=















Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na.

to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

9

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

(2)x ﹣2x+1+2x﹣3=0(3 分) 2 x ﹣2=0 2 x =2(6 分) ∴x1= ,x2=﹣ . (8 分) 2 2 2 点评: (1)用直接开方法求一元二次方程的解的类型有:x =a(a≥0) ;ax =b(a,b 同号且 a≠0) ; (x+a) =b(b≥0) ; 2 a(x+b) =c(a,c 同号且 a≠0) .法则:要把方程化为“左平方,右常数,先把系数化为 1,再开平方取正负,分开 求得方程解”. (2)运用整体思想,会把被开方数看成整体. (3)用直接开方法求一元二次方程的解,要仔细观察方程的特点. 18. (2010?三明)如图,在△ ABC 中,点 D、E、F 分别是边 AB、BC、CA 的中点. (1)求证:四边形 DECF 是平行四边形; (2)若 AC=BC,则四边形 DECF 是什么特殊四边形?请说明理由.

2

考点:菱形的判定;三角形中位线定理;平行四边形的判定。 分析: (1)根据一组对边平行且相等的四边形是平行四边进行证明; (2)根据一组邻边相等的平行四边形是菱形进行证明. 解答: (1)证明:方法一:∵D、E、F 分别是边 AB、BC、CA 的中点, ∴DE∥AC,DE= AC,CF= AC. (3)分 ∴DE∥CF,DE=CF. ∴四边形 DECF 是平行四边形,5 分) 方法二:∵D、E、F 分别是边 AB、BC、CA 的中点, ∴DE∥AC,DF∥BC, (3 分) ∴四边形 DECF 是平行四边形. (5 分) (2)解:四边形 DECF 是菱形(6 分) 理由:∵E、F 分别是边 BC、CA 的中点, ∴CE= BC,CF= AC, 又∵AC=BC, ∴CE=CF. (8 分) 由(1)知,四边形 DECF 是平行四边形, ∴四边形 DECF 是菱形. (10 分) 点评:考查了平行四边形和菱形的判定. 形的判别方法是说明一个四边形为菱形的理论依据,常用三种方法: ①定义; ②四边相等; ③对角线互相垂直平分. 19. (2010?三明)九年级(1)班的小亮为了了解本班同学的血型情况,对全班同学进行了调查.将调查数据绘制 成如下两幅不完整的统计图表.请你根据图表提供的信息回答下列问题: (1)九年级(1)班共有学生 50 人,其中 a= 14 ; (2)扇形统计图中,AB 血型所在扇形的圆心角为 36 度;
Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

(3)已知同种血型的人可以互相输血.O 型血可以输给任何一种血型的人,其他不同血型的人不能互相输血.小 红是九年级(1)班的 B 血型学生.因病需要输血.在本班学生中(小红除外)任找一人,求他的血可以输给小红 的概率. 血型 A B AB O 人数 a 13 5 18

考点:扇形统计图;统计表;概率公式。 专题:图表型。 分析: (1)O 型血有 18 人,所占百分比为 36%,则九年级(1)班人数和 A 型血人数可求; (2)AB 型血有 5 人,所占百分比为 10%,则 AB 血型所在扇形的圆心角度数可求; (3)九年级(1)班除小红外有 49 人,可以给小红输血的人数为 12+18=30 人,则其概率可求. 解答:解: (1)18÷36%=50, a=50﹣18﹣5﹣13=14; (2)360°×10%=36°; (3)九年级(1)班除小红外有 49 人,可以给小红输血的人数为 12+18=30 人 ∴P(血可以输给小红)= .

点评:本题考查的是扇形统计图的运用.读懂统计图,从不同的统计图中得到必要的信息是解决问题的关键.注意 在扇形统计图中,每部分占总部分的百分比等于该部分所对应的扇形圆心角的度数与 360°的比.用到的知识点为: 概率=所求情况数与总情况数之比. 20. (2010?三明)如图,BD 是⊙O 的弦.过点 D 作⊙O 的切线交 BO 延长线于点 A.AC⊥AD 交 BD 延长线于点 C. (1)求证:AB=AC; (2)若 AB=5,∠B=25°.求 AD 的长. (精确到 0.1)

考点:切线的性质;解直角三角形。 专题:几何综合题。
Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

11

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

分析:遇到切点,连接切点和圆心构造垂直是常用的手段.连接 OD,利用 OD⊥AD 和 AC⊥AD 得到 OD∥AC, 进而得到∠B=∠ODB=∠C,从而得到 AB=AC.而第二问直接利用解直角三角形得到. 解答: (1)证明:连接 OD. ∵AD 切⊙O 于 D, ∴OD⊥AD. ∵AC⊥AD, ∴∠ODA=∠DAC=90°. ∴OD∥AC. ∴∠1=∠C. ∵OB=OD, ∴∠B=∠1. ∴∠B=∠C. ∴AB=AC. (2)解:由(1)得,∠C=∠B,AB=AC, ∴∠C=25°,AC=5. 在 Rt△ ACD 中,tanC= ,

∴AD=ACtanC=5tan25°≈2.3.

点评:本题考查了切线的性质及解直角三角形的应用,应重点掌握. 21. (2010?三明)为了增强农民抵御大病风险的能力,三明市政府根据本地的实际情况,制定了 2010 年全市新型 农村合作医疗住院统筹补偿方案,其中县级定点医疗机构的住院补偿费标准为:起付线 400 元(即医疗费 400 元及 以下自理) ,医疗费超过 400 元的部分补偿比例为 60%,封顶线(即最高补偿费)为 60000 元. (1)享受合作医疗的李大妈在一次住院治疗中的医疗费为 18000 元.则她这次住院医疗得到的补偿费为多少元? (2)王老伯在一次住院治疗中得到的补偿费为 60000 元,他的住院医疗费最少为多少元? (3)设享受合作医疗的农民在一次住院治疗中的医疗费为 x 元,按规定得到的补偿费为 y 元,根据补偿费标准, 得到 y 与 x 的函数图象如图所示.分段写出 y 与 x 的函数关系式及相应的自变量 x 的取值范围.

考点:一次函数的应用。 专题:应用题;图表型。 分析: (1) (2)由等量关系:补偿费=(医疗费﹣400)×60%可求; (3)由“补偿费标准为:起付线 400 元(即医疗费 400 元及以下自理)”得:0≤x≤400 时,y=0; 由(2)可知最高补偿的住院费为 p,根据“医疗费超过 400 元的部分补偿比例为 60%,封顶线(即最高补偿费)为 60000 元”得:400<x≤p 时,y=(x﹣400)×0.6;当 x≥p,y=6000. 解答:解: (1)∵住院补偿费标准为:起付线 400 元(即医疗费 400 元及以下自理) ,医疗费超过 400 元的部分补 偿比例为 60%, ∴补偿费=(18000﹣400)×60%=10560(元) . (2 分) ∴李大妈得到的补偿费为 10560 元. (3 分)
Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

(2)设王老伯的住院医疗费最少为 x 元. (4 分) 根据题意,得(x﹣400)×60%=60000 ∴x=. ∴王老伯的住院医疗费最少为元. (6 分) (3)当 0<x≤400 时,y=0; (8 分) 当 400<x≤时, y=(x﹣400)×60%=0.6x﹣240; (10 分) 当 x>时,y=60000. (12 分)

即 y=

(12 分)

点评:本题考查的是用一次函数解决实际问题,此类题是近年中考中的热点问题.注意利用一次函数求最值时,关 键是应用一次函数的性质;即由函数 y 随 x 的变化. 22. (2010?三明)正方形 ABCD 的四个顶点都在⊙O 上,E 是⊙O 上的一点. (1)如图①,若点 E 在 上,F 是 DE 上的一点,DF=BE.求证:△ ADF≌△ABE; AE.请你说明理由;

(2)在(1)的条件下,小明还发现线段 DE、BE、AE 之间满足等量关系:DE﹣BE= (3)如图②,若点 E 在 上.写出线段 DE、BE、AE 之间的等量关系. (不必证明)

考点:圆周角定理;全等三角形的判定;勾股定理;正方形的性质。 专题:证明题;探究型。 分析: (1)中易证 AD=AB,EB=DF,所以只需证明∠ADF=∠ABE,利用同弧所对的圆周角相等不难得出,从而证 明全等; (2)中易证△ AEF 是等腰直角三角形,所以 EF= AE,所以只需证明 DE﹣BE=EF 即可,由 BE=DF 不难证明此 问题; (3)类比(2)不难得出(3)的结论. 解答:解: (1)在正方形 ABCD 中,AB=AD(1 分) ∵DF=BE,∠1=∠2, (3 分) ∴△ADF≌△ABE. (4 分) (2)由(1)有△ ADF≌△ABE, ∴AF=AE,∠3=∠4. (5 分) 在正方形 ABCD 中,∠BAD=90°. ∴∠BAF+∠3=90°. ∴∠BAF+∠4=90°. ∴∠EAF=90°. (6 分)
Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

13

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

∴△EAF 是等腰直角三角形. ∴EF =AE +AF . 2 2 ∴EF =2AE . (7 分) ∴EF= AE. (8 分) 即 DE﹣DF= AE. ∴DE﹣BE= AE. (9 分) (3)BE﹣DE= AE.理由如下: (12 分) 在 BE 上取点 F,使 BF=DE,连接 AF. 易证△ ADE≌△ABF, ∴AF=AE,∠DAE=∠BAF. (5 分) 在正方形 ABCD 中,∠BAD=90°. ∴∠BAF+∠DAF=90°. ∴∠DAE+∠DAF=90°. ∴∠EAF=90°. (6 分) ∴△EAF 是等腰直角三角形. ∴EF =AE +AF . 2 2 ∴EF =2AE . (7 分) ∴EF= AE. (8 分) 即 BE﹣BF= AE. ∴BE﹣DE= AE. (9 分)
2 2 2 2 2 2

点评:本题主要考查圆周角定理,全等三角形的判定及勾股定理,难度适中. 23. (2010?三明)如图①,抛物线经过点 A(12,0) 、B(﹣4,0) 、C(0,﹣12) .顶点为 M,过点 A 的直线 y=kx ﹣4 交 y 轴于点 N. (1)求该抛物线的函数关系式和对称轴; (2)试判断△ AMN 的形状,并说明理由; (3) 将 AN 所在的直线 l 向上平移. 平移后的直线 l 与 x 轴和 y 轴分别交于点 D、 E (如图②) . 当直线 l 平移时 (包 括 l 与直线 AN 重合) , 在抛物线对称轴上是否存在点 P, 使得△ PDE 是以 DE 为直角边的等腰直角三角形?若存在, 直接写出所有满足条件的点 P 的坐标;若不存在,请说明理由.

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

考点:二次函数综合题。 专题:综合题。 分析: (1)题是典型的待定系数法求二次函数解析式,利用待定系数法很容易求解; (2)题要想证明等腰直角三角形,需要证明等腰,需要证明直角,而证明等腰三角形和证明直角均需要利用坐标 求出 MN 和 AN 长,并利用勾股定理逆定理(或全等)完成证明; (3)易求得直线 AN 的解析式,由于直线 l 与直线 AN 平行,可根据直线 AN 的斜率设出直线 l 的解析式,根据解 析式可得 OD=3OE;然后分两种情况考虑: ①点 E 是直角顶点,1)很显然点 M 符合点 P 的要求; 2) 过 P 作 PQ⊥y 轴于 Q, 由于△ PDE 是等腰直角三角形, 易证得 Rt△ ODE≌Rt△ QEP, 可得到 OE=PQ=4, 而 OD=3OE, 即可得到 OD 的长,也就得到了 EQ、OQ 的长,进而可求得点 P 的坐标; ②点 D 是直角顶点,可设抛物线对称轴与 x 轴的交点为 K,解法与(3)①相同. 解答:解: (1)设抛物线的函数关系式为 y=ax +bx+c; ∵抛物线过点 C(0,﹣12) , ∴c=﹣12; (1 分) 又∵它过点 A(12,0)和点 B(﹣4,0) , ∴ ,
2

解得


2

∴抛物线的函数关系式为 y= x ﹣2x﹣12, (3 分) 抛物线的对称轴为 x=4. (5 分) (2)解法一: ∵在 y=kx﹣4 中,当 x=0 时,y=﹣4, ∴y=kx﹣4 与 y 轴的交点 N(0,﹣4) ; (6 分) ∵y= x ﹣2x﹣12= (x﹣4) ﹣16, ∴顶点 M(4,﹣16) ; (7 分) 2 2 2 ∵AM =(12﹣4) +16 =320, 2 2 2 AN =12 +4 =160, 2 2 2 MN =4 +(16﹣4) =160, 2 2 2 ∴AN +MN =160+160=320=AM , AN=MN; (9 分) ∴△AMN 是等腰直角三角形. (10 分) 解法二:
Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国 This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

2

2

15

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

过点 M 作 MF⊥y 轴于点 F,则有 MF=4,NF=16﹣4=12,OA=12,ON=4; (6 分) ∴MF=ON,NF=OA, (7 分) 又∵∠AON=∠MFN=90°, ∴△AON≌△NFM; (8 分) ∴∠MNF=∠NAO,AN=MN; (9 分) ∵∠NAO+∠ANO=90°,即∠MNF+∠ANO=90°, ∴∠MNA=90; ∴△AMN 是等腰直角三角形. (10 分) (3)存在,点 P 的坐标分别为: (4,﹣16) , (4,﹣8) , (4,﹣3) , (4,6) (14 分) 参考解答如下: ∵y=kx﹣4 过点 A(12,0) , ∴k= ; 直线 l 与 y= x﹣4 平行, 设直线 l 的解析式为 y= x+b; 则它与 x 轴的交点 D(﹣3b,0) ,与 y 轴交点 E(0,b) ; ∴OD=3OE; 设对称轴与 x 轴的交点为 K; (Ⅰ)以点 E 为直角顶点如图; ①根据题意,点 M(4,﹣16)符合要求; ②过 P 作 PQ⊥y 轴, 当△ PDE 为等腰直角三角形时, 有 Rt△ ODE≌Rt△ QEP, ∴OE=PQ=4,QE=OD; ∵在 Rt△ ODE 中,OD=3OE, ∴OD=12,QE=12, ∴OQ=8, ∴点 P 的坐标为(4,﹣8) ; (Ⅱ)以点 D 为直角顶点; 同理在图①中得到 P(4,6) , 在图②中可得 P(4,﹣3) ; 综上所得:满足条件的 P 的坐标为: (4,﹣16) , (4,﹣8) , (4,﹣3) , (4,6) .

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, als o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t ho ught to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to tr ut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way doesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional concept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

点评:此题主要考查了二次函数解析式的确定、等腰直角三角形的判定和性质、全等三角形的判定和性质等重要知 识,同时还考查了分类讨论的数学思想,综合性强,难度较大. 24. (2010?三明) (1)﹣5 的绝对值是 5 . (2)如图,∠AOB=50°,OC 平分∠AOB,则∠AOC 的度数= 25° .

考点:角平分线的定义;绝对值。 专题:计算题;压轴题。 分析: (1)根据绝对值的定义:正数的绝对值是正数作答; (2)根据角平分线的定义求解. 解答:解: (1)﹣5 的绝对值是 5; (2)∵∠AOB=50°,OC 平分∠AOB, ∴∠AOC= ∠AOB=25°. 故答案为 5、25°. 点评:此题主要考查绝对值的定义和角平分线的定义,比较简单.

Accor ding to Office Party of mass line education pra ctice a ctivities le d group of unifie d arrangement s, units main le d to for cadre s workers S hang a times party lecture , due to himse lf level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let we furt her de ep understanding mass li ne of connotation, insisted party of mass line, do masses w ork, following main from four a a spe cts tol d: a, a nd full aware nes s party of mass line educatio n pra ctice a ctivities of major mea ning Party's 18 major distinct proposed to focus on the party's a dvanced nature and purity, i n the party, with "pragmati c and clea n for the pe opl e" as the main content of the party's mass line and educational pra ctice . 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping a s party Ge neral Secretary a nd a dhere t o strictly admi nistering t he party, strengthen the party's major de cision is i n line wit h the publ ic expe ctations and strengt heni ng the construction of learni ng -oriente d service innovation of Marxist party's maj or de ployme nt, is the important meas ure to adva nce t he great ca use of s ociali sm with Chine se characteri stics. First, carry out the party's mass li ne in education practi ce, wa s carrying 1 8 of the party spirit, s ummon a powerf ul Strategic concepti on of China was 18 t he spirit of the enri chme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote strategic de ploym e nt to buildi ng socialism wit h Chines e characteristi cs, pre sents tw o 100 -year goal , namely, by 2020 Chi na's gross domestic product a nd per ca pita income of urban and rural resi de nts in 20 10 on the ba sis of double complete t he buildi ng of a well -off society; the middle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of reali zing the great rej uvenati on of the Chi nese na tion. 18 Congress of the party, Comrade XI Jinping re peatedly ex pounded the Chi nese dream. The basi c connotation of the Chinese dre am, is the national prosperit y, nati onal revitalizati on, t he ha ppi nes s of the people, China important to foll ow is to kee p China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China , but determine d confide nce , enhance self -aw arene ss, achieve s elf-reliance, to bui ld a stronger China, civilizati on, harmony, be auty, Chi na, China , Chi na.

to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen the e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dr eam ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist countries must hav e "unity of will". Hi story ha s

17

confere nces, learne d superi ors poli cies; re ports, you can l earn to deal wit h pr oblems , art, just w anted t o learn, t o learn at a ny time. To continuously ex pand the s cope of the study. T he complexity a nd compre he nsiveness of our w ork, deci ded to not only do we w ant to be "professi onals", or if "ge neralists", to dabble in different areas of k nowle dge. Ma stery of knowledge not only to have knowle dge to rational analysis. This on re quireme nts we, not only to l earni ng nati onal of route, a nd a ppr oach, and policy, als o to le arning national of legal, a nd reg ulations; not only to with political the ory armed mind, al so to with e conomic t he ory guide work; not only to rea d hi story, a ls o to read history ; not only t o abs orpti on SM of mirror, al so to gets i s of roa d; not only to from local lear n, als o to to outsi de lear n; not only to to books lear n, als o to fiel d study learn. Therefore, I woul d e ncourage you, and more to t he outsi de worl d w hen I have time to take a l ook at, take a str oll, outside devel opme nts, lear n ot her pe opl e's deve lopme nt approa ch, a nd t hen come back t o gui de our work. S econd, we must t hink. " Learni ng without t hought to ov ersha dow, thi nking wit hout learni ng is peril ous." We want t o foster the chara cter of adva nci ng with t he times, forge ahead, often reflect them selves in a dapti ng to the new situation on whet her there are delays , have anyt hing to fear in t he reform and i nnovation, whet her in terms of accelerating the devel opment of a relaxation, kee p promi sing State of mind. In order to do inve stigations, investigati ons i s the roa d to heave n, G od di spose s of the ba se. To wa nts to real he ard trut h, and justi ce to trut h, and get truth, re ceive d effectivenes s, on must in -depth a ctual , and outrea ch, and in -de pth mass es, w orshi p masse s for Division, a nd mass es he art, with mass es with dis cus sion everyone care of problem, listening they of call s, understa nd t hey of mood, feel they of s uffering, s ummary they of experie nce, conce ntrated they of wisdom, especially on mas ses most hope, and most urgent, a nd most w orries, a nd m ost com plaine d of hot, and difficulties and focus pr oblem, m ore to active re search, ca ught not put. Dare t o innovate, in our w ork, often remai n "the ol d way d oesn't w ork, the new a pproach would not" situati on, the reason, the key is that many pe opl e know that copyi ng other people's i deas , mechanically, usi ng some one el se's old ways . To cha nge thi s predi cament, re quire s us t o break the shackle s of traditional con cept s to overcome conservative, conformist, good at finding new pr oblems a nd to a ccept ne w thing s, summarize new ex perience, new ideas, developing new programmes a nd Maveri ck, a new approa ch to solve probl ems, s peed up development. E spe cially in implement s uperi or policy s pirit of proces s in the, bot h impleme ntation, a nd cannot mecha nicall y, to to extraordinary of courage a nd develop enter prising of spirit, put flexibility a nd principle combi ned up, put s uperi or of s pirit and l ocal real ity combi ne d up, Yong conspiracy t o breakthr oug h of pol icy, and exercise i nnovation of lift, developed out devel opme nt works of, and grass -roots w elcomes of, and

Accor ding to Office Party of mass li ne educati on pra ctice activities le d group of unified arrangeme nts, units main l ed to for ca dres w orkers Sha ng a times party le cture, due to himself level limited, only put thi s stage concentrated lear ning of experience today and everyone common wit h learni ng excha nge, purpose is let w e further deep understanding mas s line of connotati on, i nsiste d party of mass li ne, do masse s work, foll owi ng main from four a as pect s told: a, and full aware ness party of mass line education pra ctice a ctivities of major mea ning Party's 18 major distinct proposed t o focus on the party's a dvanced nat ure a nd purity, i n the party, wit h "pragmatic and clea n for the people" as the mai n content of the party's mas s line a nd e ducational practi ce. 确 明 有 都 样 力 能 合 综 读 阅 、 写 与 字 识 同 来 出 了 提 养 素 要 重 种 为 作 革 改 程 课 轮 新 。 位 地 的 视 忽 被 在 处 直 一 际 交 口 , 中 学 教 文 语 国

This is comrade XI Jinping as party Ge neral Secretary a nd a dhere t o strictly admi nistering t he part y, strengt hen the party's major de cision is i n line wit h the public expectations a nd stre ngthe ning the construction of learni ng -orie nted servi ce innovati on of Marxist party's major depl oyment, is t he important measure t o advance the great cause of s ociali sm with Chine se characteristi cs. F irst, carry out the party's mass li ne in education pra ctice, w as carryi ng 18 of the party spirit, summo n a powerful Strategic conce ption of Chi na was 18 t he s pirit of the e nrichme nt and deve lopment of the party, cons cienti ously study t he Chines e dream, lea ding people

force for realizing the great rejuve nation of the Chine se nati on the Chi nese dream of urgent needs. Party's 18 t o prom ote str ategic de ployme nt to buildi ng sociali sm with Chines e characteristi cs, present s two 100 -year goal , namel y, by 202 0 Chi na's gross domestic product and per ca pita income of urban and rural resi de nts in 20 10 on the basis of double complete t he buildi ng of a well -off society; the mi ddle of this century i nto a pr osperous, dem ocratic, civilize d and harm oni ous S ociali st moder n countr y, and on this basis , the Chine se dream of realizing the great rejuvenati on of the Chi nes e na tion. 18 Congress of the party, Com rade XI Jinping re peatedly ex pounded the Chi nes e dream. The basi c connotation of the Chi nese dream, is the national prosperit y, nati onal revitali zation, the happi nes s of the people, China im portant to foll ow is to ke ep China Roa d, carry forwar d the s pirit and cohesion strengt h of Chi na, dream dreams of the people of China, but determine d confide nce , enhance self -a warene ss, a chieve s elf-reliance, to build a stronger China, civilizati on, harmony, beauty, Chi na, China, Chi na. to hard to reali ze the Chinese dre am, mass educati on a ctivities in dept h the fundamental starting point and ending poi nt. Strengthen t he e ducation of the party' s mass line, hel ps to train t he collective cons ciousne ss of the unity of the party and the people, playi ng the Chi nese dream ideological ba ses. Comrade Ma o Zedong stres sed that parties s hould have "common lang uage" socialist count ries must hav e "unity of will". Hi story ha s




友情链接: 时尚网 总结汇报 幼儿教育 小学教育 初中学习资料网