2009年中考全国42省市中考数学填空选择题选编03

全国四十二省市中考数学

填空题

选择题

选编

沈 勇 2009年中考数学填空题选择题选编

目 录

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43.

2009年广西省贵港市 ··················································································································· 1 2009年辽宁省十二市 ··················································································································· 2 2009年包头市 ······························································································································· 3 2009年常德市 ······························································································································· 5 2009年郴州市 ······························································································································· 6 2009年大连市 ······························································································································· 7 2009年定西市 ······························································································································· 8 2009年广东省中山市 ················································································································· 10 2009年广西省河池市 ················································································································· 11 2009年柳州市 ····························································································································· 12 2009年广西省柳州市 ················································································································· 13 2009年广西省南宁市 ················································································································· 13 2009年广西省钦州市 ················································································································· 14 2009年广西省梧州市 ················································································································· 15 2009年桂林市 百色市 ··············································································································· 17 2009 年哈尔滨市 ························································································································ 19 2009年河北省 ····························································································································· 20 2009年湖北荆州市 ····················································································································· 22 2009年湖北省鄂州 ····················································································································· 23 2009年湖北省十堰市 ················································································································· 25 2009年长沙市 ····························································································································· 26 2009年怀化市 ····························································································································· 27 2009年湖北省黄冈市 ················································································································· 29 2009年湖北省黄石市··················································································································· 30 2009年吉林省 ····························································································································· 31 2009年四川省凉山州 ················································································································· 32 2009年四川乐山市 ····················································································································· 34 2009年四川绵阳市 ····················································································································· 35 2009年四川资阳市 ····················································································································· 37 2009年四川省眉山市 ················································································································· 39 2009年辽宁省抚顺市 ················································································································· 40 2009年辽宁省铁岭市 ················································································································· 42 2009年柳州市 ····························································································································· 43 2009年牡丹江市 ························································································································· 45 2009年山东省枣庄市市 ············································································································· 47 2009年宁德市 ····························································································································· 47 2009年庆阳市 ····························································································································· 50 2009年天津市 ····························································································································· 51 2009年武汉市 ····························································································································· 53 2009年重庆市(江津卷) ·············································································································· 54 2009年重庆市 ····························································································································· 56 2009年深圳市 ····························································································································· 57 2009年部分省市中考数学中典型填空题与选择题选编 ························································· 59

2009年中考数学填空选择题选编 沈勇 第 1 页 共 64页

2009年中考数学填空选择题选编

2009年广西省贵港市

一、细心填一填（本大题共10小题，每小题2分，满分20分）

1．－1的绝对值是 ． 2．计算：3a－2a＝ ．

3．如图，直线a、b相交，若∠1＝40o，则∠2＝ 度．

4．众志成城，抗击地震．某小组7名同学积极捐出自己的零花钱支援灾区，他们捐款的数额(单位：元)分别为50、20、50、30、50、25、135．这组数据的众数是 ． 5．如果等腰三角形的一个底角是50o，那么它的顶角是 度． 6．若关于x的一元一次方程3x＋2k＝4的解是x＝2，则k＝ ．

7．如图，AC是菱形ABCD的对角线，E、F分别是AB、AC的中点，如果EF＝3，那么菱形ABCD的周长是 ．

A B C E D D B D F 1 A B a O 2 C A E C b 第3题图 第7题图 第9题图 第8题图

8．如图，在△ABC中，∠C＝90o，∠A＝30o，AB＝23，D为AB的中点，DE⊥AB交AC于点E，连接BE，则△ABE的面积等于 ．

9．如图，AB是⊙O的直径，并且AB＝4，C、D为⊙O上的两点，连接BC、BD、CD，若∠BDC＝30o，则弦BC的长为 ．

k

10．已知P1(x1，y1)、P2(x2，y2)、?、Pn(xn，yn)(n为正整数)是反比例函数y＝图象上的点，其中x1＝1、

x

1

x2＝2、?、xn＝n．记T1＝x1y2、T2＝x2y3、?、T2009＝x2009y2010．若T1＝，则T12T22?2T2009＝ ．

2

二、精心选一选（本大题共8小题，每小题3分，满分24分） 11．sin30o等于（ ）

32 1

A．1 B． C． D．

222

12．下列事件中，是必然事件的是（ ）

A．每天早上，太阳从西边升起 B．阴天一定会下雨

C．通常情况下，抛出的篮球会下落 D．男生的身高一定比女生高 13．在下面的四个几何体中，它们各自的主视图与左视图不相同的是（ ） A． B． C． D． 圆锥 正方体 三棱柱 圆柱

14．一个三角形三个内角的度数之比是2∶3∶5，则这个三角形一定是（ ）

A．直角三角形 B．等腰三角形 C．钝角三角形 D．锐角三角形

2

x－1

y 15．若分式的值为零，则x的值是（ ）

x＋1

A．0 B．1 C．－1 D．±1

A B 2

16．如图，点A是y轴正半轴上的一个定点，点B是反比例函数y＝

xx O (x＞0)图象上的一个动点，当点B的纵坐标逐渐减小时，△OAB的面积将

第16题图 （ ）

A．逐渐增大 B．逐渐减小 C．不变 D．先增大后减小

2009年中考数学填空选择题选编 沈勇 第 2 页 共 64页

17．如图，在□ABCD中，E是AD的中点，且CE＝CD，F是CE与BD的交点，则下列结论不正确的是．．．（ ）

A．∠ABC＝∠CED B．BF＝2DF C．四边形ABCE是等腰梯形 D．S△BCF＝S△DEF

1

18．如图，抛物线y＝ax2＋bx＋c的对称轴是x＝，小亮通过

3

观察得出了下面四条信息：

①c＜0，②abc＜0，③a－b＋c＞0，④2a－3b＝0． 你认为其中正确的有（ ）

A．1个 B．2个 C．3个 D．4个

A

E F B y －1 O 1 C D

2 x

2009年辽宁省十二市

一 、选择题

1．某天的最高气温是7℃，最低气温是―５℃，则这一天的最高气温与最低气温的差是 A．2℃ B．―2℃ C．12℃ D．―12℃

ED2．如图1，已知直线AB、CD相交于点O，OA平分∠EOC,

∠EOC=110°，则∠BOD的度数是

A．25° B．35° C．45° D．55°

AB3．下列图形中既是中心对称图形又是轴对称图形的是 O Cy图1 2m 1 A B C D

-2-1O12x4．三根长度分别为3cm，7cm，4cm的木棒能围成三角形的事件是 -1-2A．必然事件 B．不可能事件 C．不确定事件 D．以上说法都不对

图2 5．如图２，直线m是一次函数y=kx+b的图象，则k的值是 A．―１ B．―2 C．１ D．2

6．受全球金融危机的影响，2008年某家电商城的销售额由第二季度的800万元下降到第四季度的648万元，则该商城第三、四季度的销售额平均下降的百分率为 A．10% B．20% C．19% D．25% 7．用若干个小立方块搭一个几何体，使得它的左视图 和俯视图如图３所示，则所搭成的几何体中小立方 块最多有

A．15个 B．14个 C．13个 D．12个 左视图

俯视图

图3 8．如图４，从矩形纸片AMEF中剪去矩形BCDM后, 动点P从点 FEB出发，沿BC、CD、DE、EF运动到点F停止，设点P运动的路程为x，△ABP的面积为y，如果y关于x 的函数图象如图５所示，则图形ABCDEF的面积是 CD A．32 B．34 C．36 D．48

二、填空题（每小题3分，共24分） AMB2

图４ 9． 分解因式：3a―27= ．

10．为了解初三学生的视力情况，某校随机抽取50名学生进行视力检查，结

y果如下：

4.7 4.8 4.9 5.0 视力 4.6以下 4.6 5.0以上 6 15 5 10 3 4 7 人数(人) 这组数据的中位数是 ．

047917x11．已知：平面直角坐标系中有一点A（2，1），若将点A向左平移4个单位，

再向下平移2个单位得到点 A1 ，则点A1的坐标是 ． 图５ 12．已知：扇形OAB的半径为12厘米，∠AOB=150°，若由此扇形围成一个

2009年中考数学填空选择题选编 沈勇 第 3 页 共 64页

圆锥的侧面，则这个圆锥底面圆的半径是 厘米．

13．如图6，用同样大小的黑色棋子按图所示的方式摆图案，按照这样的规律摆下去，第100个图案需棋

子 枚．

O D A C 2

图案1 图案2 图案3

B 图6

14．已知：如图7 ，CD是⊙O的直径，点A在CD的延长线上，AB切⊙O图7

于点B，若∠A＝30°，OA＝10，则AB= ．

??m?1的解是负数，则m的取值范围是 ． x?2116．已知：点A（m，m）在反比例函数y=的图象上，点B与点A关于坐标轴对称，以AB为边作等边

x15．关于x的方程

△ABC，则满足条件的点C有 个．

2009年包头市

一、选择题：本大题共有12小题，每小题3分，共36分．每小题只有一个正确选项，请把正确选项的字

母代号填在题后的括号内． 1．27的立方根是（ ） A．3 B．?3 C．9 D．?9 2．下列运算中，正确的是（ ） A．a?a?a2 B．aa2?a2 C．(2a)2?4a2 D．(a3)2?a5 3．函数y?x?2中，自变量x的取值范围是（ ） A．x??2 B．x≥?2 C．x??2 D．x≤?2

4．国家体育场“鸟巢”建筑面积达25.8万平方米，将25.8万平方米用科学记数法（四舍五入保留2个有效数字）表示约为（ ）

A．26?104平方米 B．2.6?104平方米 C．2.6?105平方米 D．2.6?106平方米 5．已知在Rt△ABC中，?C?90°，sinA?A．

4 3 B．

4 5

3，则tanB的值为（ ） 553 C． D．

446．下列图形中，既是轴对称图形又是中心对称图形的有（ ）

人数 A．4个 B．3个 C．2个 D．1个

12 7．某校为了了解九年级学生的体能情况，随机抽查了其中的30名学生，测10 试了1分钟仰卧起座的次数，并绘制成如图所示的频数分布直方图，请

5 根据图示计算，仰卧起座次数在15~20次之间的频率是（ ）

A．0.1 B．0.17 C．0.33 D．0.4 0 15 20 25 30 35 次数 8．将一个正方体沿某些棱展开后，能够得到的平面图形是（ ）

A． Ｂ． Ｃ． D．

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