2012-2013学年山东省乐陵市丁武中学八年级下学期期末考试数学试卷（带解析）

1.实验室里几种物质在互相谈论，它们的叙述中属于化学变化的是（）

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2.下列事故处理正确的是（）

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3.

根据短文内容判断下列句子正误。

Look! It's my school dining hall．We are here for lunch every day．Before，there were many tall trees．Ten years ago，there was only a small house in my school．There was no library or computer．The playground was also small．

Now，my school is very beautiful．The playground is big．The grass is green．We have PE and play sports on it．There is a nice teaching building in my school．It has six floors．The computer rooms are on the fourth floor and the library is on the sixth floor．We read books in the library and use the Internet in the computer rooms．

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4.

根据短文内容判断下列句子正误。

Look! It's my school dining hall．We are here for lunch every day．Before，there were many tall trees．Ten years ago，there was only a small house in my school．There was no library or computer．The playground was also small．

Now，my school is very beautiful．The playground is big．The grass is green．We have PE and play sports on it．There is a nice teaching building in my school．It has six floors．The computer rooms are on the fourth floor and the library is on the sixth floor．We read books in the library and use the Internet in the computer rooms．

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5.

My father usually{#blank#}1{#/blank#}(play)badminton on weekends．

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6.

My father usually{#blank#}1{#/blank#}(play)badminton on weekends．

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7.

My father usually{#blank#}1{#/blank#}(play)badminton on weekends．

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8.

一个四边形，对于下列条件：①一组对边平行，一组对角相等；②一组对边平行，一条对角线被另一条对角线平分；③一组对边相等，一条对角线被另一条对角线平分；④两组对角的平分线分别平行，不能判定为平行四边形的是（）

A．①

B．②

C．③

D．④

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9.

如图，已知E是菱形ABCD的边BC上一点，且∠DAE=∠B=80°，那么∠CDE的度数为（）

A．20°

B．25°

C．30°

D．35°

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10.

某居民小区本月1日至6日每天的用水量如图所示，那么这6天的平均用水量是（）

A．33吨

B．32吨

C．31吨

D．30吨

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11.

请选择一组

的值，写出一个关于

的形如

的分式方程，使它的解是

，这样的分式方程可以是______________.

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12.

如图，直线y=﹣x+b与双曲线y=﹣

（x＜0）交于点A，与x轴交于点B，则OA²﹣OB²=_____．

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13.

已知一组数据10，10，x，8的众数与它的平均数相等，则这组数的中位数是____．

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14.

解方程：

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15.

小军八年级上学期的数学成绩如下表所示：

测验类别	平时				期中考试	期末考试
测验类别	测验1	测验2	测验3	测验4	期中考试	期末考试
成绩	110	105	95	110	108	112

（1）计算小军上学期平时的平均成绩；
（2）如果学期总评成绩按扇形图所示的权重计算，问小军上学期的总评成绩是多少分？

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2012-2013学年山东省乐陵市丁武中学八年级下学期期末考试数学试卷（带解析）

1.选择题(共7题)

2.单选题(共3题)

3.填空题(共3题)

4.解答题(共2题)

【1】题量占比

【2】：难度分析