[中学联盟]山东省东昌府区梁水镇中心中学2017届九年级下学期期中考试数学试题

适用年级:初三
试卷号:572325

试卷类型:期中
试卷考试时间:2017/12/23

1.单选题(共7题)

1.
计算的结果是(   )
A.B.C.-1D.1
2.
在如图所示的数轴上,点B与点C关于点A对称,A、B两点对应的实数分别是和﹣1,则点C所对应的实数是(    )

A. 1+   B. 2+    C. 2﹣1 D. 2+1
3.
如图,在直角坐标系中,以原点O为圆心的同心圆的半径由内向外依次为1,2,3,4,…,同心圆与直线y=x和y=﹣x分别交于A1,A2,A3,A4…,则点A30的坐标是(  )
A.(30,30)B.(﹣8,8C.(﹣4,4D.(4,﹣4
4.
函数中自变量x的取值范围是  
A.B.C.D.
5.
将一副三角板按如图所示摆放,图中∠α的度数是()

A. 75° B. 90° C. 105° D. 120°
6.
用两块完全相同的长方体搭成如图所示的几何体,这个几何体的主视图是( )
A.B.C.D.
7.
下列计算正确的是()
A.x2+x3=x5B.x2•x3=x6C.(x23=x5D.x5÷x3=x2

2.选择题(共7题)

8.两座城市相距920千米,甲、乙两辆汽车分别从A、B两个城市同时出发,相向而行,经过4小时相遇.甲车每小时行120千米,乙车的速度是每小时行多少千米?(用方程解)
9.两地铁路长568千米,甲乙两列火车同时从两地相对开出,甲火车每小时行驶154千米,乙火车每小时行驶130千米,经过几小时两车相遇?(列方程解答)
10.

根据短文内容理解改写错误。

Dear Li Min,

    Thank you for tell {#blank#}1{#/blank#} me so much about your best friend Gao Jun. Now, I'll tell you nothing{#blank#}2{#/blank#}  about my best friend Li Ming.

    Li Ming is a fifteen-years-old {#blank#}3{#/blank#} boy. He comes from Beijing. He’s outgoing(外向的)and we get on well for {#blank#}4{#/blank#} each other. He is very funny, and he always makes us to laugh{#blank#}5{#/blank#} . At school, he is a{#blank#}6{#/blank#}  excellent student. She {#blank#}7{#/blank#} often helps us with our English. At home, he often  helps his mother do some houseworks{#blank#}8{#/blank#} . By the way, he is especially good at playing football, and we often plays{#blank#}9{#/blank#}it after class. Most of my classmates like him very much. I’m very happily{#blank#}10{#/blank#} to have a friend like him.

                                                  Yours,

                                                  Zhang Hua

11.

根据短文内容理解改写错误。

Dear Li Min,

    Thank you for tell {#blank#}1{#/blank#} me so much about your best friend Gao Jun. Now, I'll tell you nothing{#blank#}2{#/blank#}  about my best friend Li Ming.

    Li Ming is a fifteen-years-old {#blank#}3{#/blank#} boy. He comes from Beijing. He’s outgoing(外向的)and we get on well for {#blank#}4{#/blank#} each other. He is very funny, and he always makes us to laugh{#blank#}5{#/blank#} . At school, he is a{#blank#}6{#/blank#}  excellent student. She {#blank#}7{#/blank#} often helps us with our English. At home, he often  helps his mother do some houseworks{#blank#}8{#/blank#} . By the way, he is especially good at playing football, and we often plays{#blank#}9{#/blank#}it after class. Most of my classmates like him very much. I’m very happily{#blank#}10{#/blank#} to have a friend like him.

                                                  Yours,

                                                  Zhang Hua

12.

根据句子的意思,用“野”组成合适的词语,填在句中的横线上。

①索溪峪{#blank#}1{#/blank#}的美,使游览者感到了从未有过的快慰和清爽。

②附近居民集体哄抢地震灾区急需的救援物资,这样的{#blank#}2{#/blank#}行为,理应受到社会的谴责。

③登上塔顶,整个公园都在我的{#blank#}3{#/blank#}之内。

④野马在茫茫无际的{#blank#}4{#/blank#}上奔驰。

⑤日本帝国主义侵略者{#blank#}5{#/blank#}勃勃,妄图控制整个中国。

13.

根据短文理解,回答下列问题。

      A mother planted many kinds of vegetables in her garden. One morning she said to her daughter. “Betty, come here. Look at all these little yellow marks on the leaves of the cabbages. They are eggs of a kind of insects. They are very beautiful but very bad for cabbages. This afternoon you must find all the eggs on the leaves and kill them. In this way, you will help us have better greener and bigger cabbages.”

      Betty didn't think she should do it at once and in the end she forgot all about it. Her mother was ill for a few days and couldn't work in her garden. When she was well, she took Betty to the garden to see the cabbages. To their surprise, the insects had eaten up every leaf. When Betty saw this, she was upset and began to cry. Then her mother said to her, “We should never put off what we have to do today till tomorrow. And you must learn to deal with the things while they are small. or it will turn into a big problem.”

14.

从方框中选择适当的短语,并用其正确形式填空。

hurt oneself    take a look  walk along     on one’s way   go off 

3.填空题(共2题)

15.
计算:=
16.
一元二次方程x2-2x=0的解是_______.

4.解答题(共6题)

17.
解不等式组
18.
某电子商投产一种新型电子产品,每件制造成本为18元,试销过程中发现,每月销量y(万件)与销售单价x(元)之间关系可以近似地看作一次函数y=-2x+100.(利润=售价-制造成本)
(1)写出每月的利润z(万元)与销售单价x(元)之间的函数解析式;
(2)当销售单价为多少元时,厂商每月能够获得350万元的利润?当销售单价为多少元时,厂商每月能够获得最大利润?最大利润是多少?
(3)根据相关部门的规定,这种电子产品的销售单价不得高于32元,如果厂商要获得每月不低于350万元的利润,那么制造这种产品每月的最低制造成本需要多少万元?
19.
儿童节期间,文具商店搞促销活动,同时购买一个书包和一个文具盒可以打8折优惠,能比标价省13.2元.已知书包标价比文具盒标价3倍少6元,那么书包和文具盒的标价各是多少元?
20.
如图,直线AB与x轴交于点A(1,0),与y轴交于点B(0,﹣2).
(1)求直线AB的解析式;
(2)若直线AB上的点C在第一象限,且S△BOC=2,求点C的坐标.
21.
如图,矩形ABCD的对角线相交于点O,DE∥AC,CE∥B
A.
求证:四边形OCED是菱形.
22.
为进一步加强中小学生近视眼的防控工作,市教育局近期下发了有关文件,将学生视力保护工作纳入学校和教师的考核内容,为此,某县教育组管部门对今年初中毕业生的视力进行了一次抽样调查,并根据调查结果绘制如下频数分布表和频数分布直方图的一部分.

请根据图表信息回答下列问题:
(1)求表中a、b的值,并将频数分布直方图补充完整;
(2)若视力在4.9以上(含4.9)均属正常,估计该县5600名初中毕业生视力正常的学生有多少人?
试卷分析
  • 【1】题量占比

    单选题:(7道)

    选择题:(7道)

    填空题:(2道)

    解答题:(6道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:1

    5星难题:0

    6星难题:5

    7星难题:0

    8星难题:2

    9星难题:7