学校 姓名 班级___________ 座位号 ……装…………订…………线…………内…………不…………要…………答…………题……
一、选择题 （每小题3分，共30分）
1．一个数的相反数是2，这个数是（ ） A．
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11 B．? C．2 D．?2 222．如果四个有理数的积是负数，那么其中负因数有（ ）个 A．3 B．1 C．0或2 D．1或3
3．火星和地球的距离约为34 000 000千米，用科学记数法表示34 000 000的结果是（ ） A．0. 34×108 B．3. 4×106
C．34×106 D．3. 4×107
4．关于x的方程3x + 2m + 1 = x?3m?2的解为x = 0，则m的值为（ ） A．?This article includes some parts, including text, pictures, and design.This article includes some parts, including text, pictures, and design.
3112 B．? C． D．5555This article includes some parts, including text, pictures, and design. 5．某种商品每件的进价为190元，按标价的九折销售时，利润率为15. 2%。设这种商品的标价为每件x元，依题意列方程正确的是（ ） A．190?0.9x?190?0.152
B．0.9x?190?0.152 C．0.9x?190?190?0.152D．0.152x?190?0.9
6．足球比赛计分规则是：胜一场得3分，平一场得1分，负一场得0分。今年武汉黄鹤楼队经过26轮激战，以42分获“中超”联赛第五名，其中负6场，那么胜场数为（ ） A．9 B．10 C．11 D．12
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7．下图是一个由6个相同的小立方体组成的几何体，从上面看得到的平面图形是（ ）
A． B． C． D．8．下面等式成立的是（ ）
A．83. 5°= 83°50′ B．37°12′36″=37. 48° C．24°24′24″= 24. 44° D．41. 25°= 41°15′
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9．某校为了解360名七年级学生体重情况，从中抽取了60名学生进行检测。下列说法中正确的是（ ） A．总体是360
B．样本是60名学生的体重C．样本是60名学生 D．个体是学生
10．已知a、b互为相反数，且| a?b | = 6，则| b?1|的值为（ ） A．2 B．2或3 C．4 D．2或4
二、选择题（每小题3分，共18分）
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11．数轴上点A表示的数是?4，点B表示的数是3，那么AB =__________. 12．近似数2. 13×103精确到_______位.
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13．一个角的余角和补角之比为2︰5，则这个角等于________度.
14．已知方程x = 10?4x的解与方程8x + 5m = 11的解相同，那么m =________.
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15．小明根据下列语句，分别画出图形（a）（b）（c）（d）。请你将图形的标号填在相应的“语句”后面. ①直线l经过A、B、C三点，并且点C在点A与B之间：________； ②点C在线段AB的反向延长线上：________；
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③P是直线a外一点，过点P的直线b与直线a相交于点Q：__________； ④直线l、m、n相交于点O：__________.
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Pnlo(a)CA(b)BAC(c)BQab(d)
16．设一列数a1 、a2 、a3 、…、a100 中任意三个相邻数之和都是37，已知a2 = 25，a9 = 2x，a99 = 3?x，那么a100 =__________.
三、解答题（本大题共52分）
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2317．（5分）计算：?3?(?2)???4?÷???1?? 4??This article includes some parts, including text, pictures, and design.
18．（5分）解方程：
This article includes some parts, including text, pictures, and design.2x?1x?3 ?1?32
19．（5分）下表是某班5名同学某次数学测试成绩。根据信息完成下表，并回答问题。
姓名 成绩 与全班平 均分之差 五人中分数最高的是谁？分数最低的是谁？谁的分数与全班平均分最接近？
This article includes some parts, including text, pictures, and design.王芳 刘兵 张昕 李聪 江文 89 +2 0 84 ?1 ?2
20．（5分）如图，线段AC = 6 cm，线段BC = 15cm，点M是AC的中点，在CB上取一点N，使得CN︰NB = 1︰2。求MN的长。
AMCNB
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銆愭柊缂栥�?019-2020浜烘暀鐗堜竷骞寸骇鏁板涓婂唽鏈熸湯鑰冭瘯娴嬭瘯鍗?鍙婄瓟妗? - 鐧惧害鏂囧簱
