2009-2010学年山东省平东开发区实验中学上学期初二期末测试数学

position-related consumption of civil servants has been swept by finance, consumer, regardless of cost, extravagance and waste in the civil service position-related consumption, abuse, corruption and embezzlement, corruption is important. Then, under the conditions of market economy, how to reform the existing civil duty consumption management, explores a source to prevent and curb the post consumption corruption way, is currently a major issue faced by honest work. Recently, I conducted research on this issue, this problem on some humble opinions. First, the existing public servants ' duty consumption the main problems seen from the investigation and reasons, in recent years, public servants ' duty consumption caused by the abuses and not a person of integrity, is one of the major problems in the party in Government, its operation order have a negative effect on the party and Government organs, seriously damaging the image of the party and the Government, underminingthe relationship between party and the masses, effect, opening up and economic construction. From I County in recent years of governance situation see, positions consumption in the produced of "two not" phenomenon rendering four a features: a is positions consumption system lost has due of binding, right is greater than rules, and right is greater than method of phenomenon more highlight; II is in positions consumption in the Camera Obscura operation, using terms, will positions consumption into has personal consumption, will corporate points to into personal points to, makes positions consumption in some aspects has into positions enjoy and self-dealing of means; three is to positions consumption for name, fraud, false impersonator, Trend of negative corruption phenomena such as corruption and misappropriation; four palaces, follow the fashion, rivalries, wasteful, and post consumption became a symbol of showing off their individual capacities. Caused by public servants ' dutyconsumption of many "two" phenomenon in which people reflect the biggest problems are: (a) the official car problems. Mainly in three aspects: one is the larger buses cost expenditure. According to statistics, until November 2003, XX County township Department bus 159 cars, which department owns the bus 145 vehicles, and showed an increasing trend. Financial expenses cost per bus per year to 35,000 yuan, and in fact every cost up to 50,000 yuan. Some units also hiring temporary drivers and expenditure on wages and subsidies. Necessary to "keep a car", but also "dependants", leading to larger expenses. Second, gongchesiyong breed unhealthy tendencies. Some people believe that now some bus drivers use one-third, one-third leading private one-third used for official purposes. Some public servants, especially leading officials motoring, cars for private purposes, violating the self-discipline regulations, and even lead to traffic accidents. According to statistics from related departments,

大田六中每周一练（7） 1 2009—2010八 年 级（上）数 学月考试卷

一、填空题：（每题2分，共20分）

1. 16的算术平方根是_________。

2. 若△ABC中，∠C=90°，若a=10，b=24，则c= ；

3.若ABC的三边分别是a、b、c，且a、b、c满足a2+c2=b2，则∠ =90 o

4. -3的倒数是 。

5.化简|3|

6.如图，半圆A的面积是 .

7.若________205|3|baba则，

8.一个正数的平方根为1-32aa和，则a的值为 。

9.一艘小船早晨8：00出发，它以8海里/时的速度向东航行，1小时后，另一艘小船以12海里/时的速度向南航行，上午10：00，两小相距 海里。

10. 如图，ΔABC按顺时针方向旋转一个角后成为ΔADE.

已知∠B＝93°，∠AED＝48°，则旋转角等于 °

二、精心挑一挑（每小题3分，共18分）

11.分别有下列几组数据：①6、8、10 ②12、13、5 ③ 7、8 、15 ④40、41、9其中是勾股数的有：（ ）

A、4组 B、3组 C、2组 D、1组

12.下列说法错误的是（ ）

A1)1(2 B 1133C 2的平方根是2 D232)3(

13.在下列各数：51525354.0、10049、2.0、1、7、11131、327中，无理数的个数是 ( )

A、2 B、3 C、4 D、5

14.如图，以数轴的单位长线段为边作一个正方形，以数轴的原点为旋转中心，将过原点的对角线顺时针旋转，使对角线的另一端点落在数轴正半轴的点A处，则点A表示的数是

2009-2010学年上学期期末检测

八 年 级 数 学 试 卷

（全卷满分120分，考试时间120分钟）

题 号 一 二 三 总 分

得 分

一、选择能手——看谁的命中率高（每小题只有一个正确的选项，每小题3分，共30分）

1．8的立方根是（ ）

A．2 B．±2 C．-2 D．±4

2．一个多边形的每个内角都是108°，那么这个多边形是（ ）

A．五边形 B．六边形

C．七边形 D．八边形

3．下列说法中错误的是（ ）

A．四个角相等的四边形是矩形 B．对角线互相垂直的矩形是正方形

C．对角线相等的菱形是正方形 D．四条边相等的四边形是正方形

4．一次函数bkxy的图象如右图所示，

则k、b的值为（ ）

A．k>0, b>0 B．k>0, b<0

C．k<0, b>0 D．k<0, b<0

5．以下五个大写正体字母中，是中心对称图形的共有（ ）

G S M X Z

A．1个 B．2个 C．3个 D．4个 得 分 评卷人

x y

o

6．在下列各数中是无理数的有（ ）

-0.333…, 4, 5, , 3.1415, 17，

2.010101…(相邻两个1之间有1个0),

A．1个 B．2个 C．3个 D．4个

7．计算82的结果是（ ）

A．4 B．4 C．2 D．±4

8．下列说法正确的是（ ）

A．数据3，4，4，7，3的众数是4．

B．数据0，1，2，5，a的中位数是2．

2010——2011上学期八年级数学期末试题

一、填空题：

1、 函数1x1xy中，自变量x的取值范围是

2、 计算：432)ba3(的结果是

3、 已知一次函数2axy与3bxy的图像交于x轴上一点，则ba的值是

4、 一次函数)1k(kxy的图像经过第一、三、四象限，则k的取值范围是

5、 已知1yx，则22y21xyx21的值为

6、 在21,9,71,0323232,,2,14.3中，无理数有 个。

7、 如图，在数轴上点A和点B之间表示整数的点有 个。

8、 如图，△ABC中，BC = AC，BD是△ABC的角平分线，且BD = BE，∠A = 100°,则

∠DEC =

9、 若109,53nm，则mn23

10、如果正数x的平方根为2a与6a3，则3a63

二、选择题

11、下列运算正确的是（ ）

A 633xxx B 326aaa C ab8b5a3 D 333ba)ab(

12、已知点A(-2010，1y) ,B( -2009 , 2y)都在直线27x21y上，则1y与2y的关系是（ ）

A 21yy B 21yy C 21yy D 21yy

13、已知3b5a2，且0ab，则ba的值为（ ） 8题图EDCBA7-2BA

A 8 B 2 C 8或2 D 2或2

14、如图，正方形ABCD中，边AB的长为6，E、F分别在BC、CD上，∠EAF=45°，如果△AEF的面积为15，那么△ECF的面积是（ ）