文档介绍：苏教版初二数学下册期末试卷
八年级下册期末数学试卷 一、选择题
1(计算的结果是 ( ) 4
,(2 ,( ,( ,(4( ,2,2
x，12(若分式的值为0，则的值为 ( ) xx,2
0A( B( C( D( ,1123(下, should will cable around with non-burning sex fiber jam closely, again filling sealed clay, sealed clay filling depth shall not is less than pipe diameter, and shall not is less than 40mm. Introduction of explosion-proof motor cable lines looking for connections, can be used to find connections, between it and the explosion-proof electric junction box, explosion-proof requirements should be to cope with different environmental conditions of different materials should be used to find the connection. explosive
xy12(计算 ( ,,xyxy,,
13(“两直线平行，内错角相等”的逆命题是: ( 14(如图所示的是用大小相同(黑白两种颜色)的正方形砖铺成的地板，一宝物藏在某一块
正方形砖下面，宝物在白色区域的概率是 (
D A2l1 A
E 1l2 DBC CB(第15题图) (第14题图) 第11题图
15(如图，直线l//l，AB?CD，?1=34?，那么?2的度数是 ( 12
2b16(反比例函数y,的图象同时过A、B两点，则、的大小关系a(2,),a(3,),bx
是 (
EF,17(如图，在?ABCD中，E为BC中点，DE、AC交于F点，则 ( DF
A D
F
B C E
(第17题图)
106yy,,,18(如图，A、B分别是反比例函数图象上的点，过A、B作轴的垂线，垂xxx
足分别为C、D，连接OB、OA，OA交BD于E点，?BOE的面积为S，四边形ACDE1的面积为，则SS,, ( S212
三、解答题
2239xx,,x,2(1),,19(先化简，再求值:，其中( xx
20(解不等式组，并把不等式组的解集在数轴上表示出来。
proof lamps lamp type, model and power, the design and specification of requirements, may not be altered. Spiral bulbs should- the installation of explosionm. should be complete and should tighten the clamping larva inlet seals. Metal gasket thickness shall not be less than 2m ment into the line port and wiring and cables, wires should be capable of reliably sealing, extra inlet elastic gasket, metalproof electrical equip-proof ventilation system should comply with the design requirements and. explosion-ion of explosionowing requirements: repair and decoration works should end second grouting and finishing work should end, satisfactory operatmeet the follwithin explosion and fire hazard atmospheres before the installation is put into operation, building installation work shall e connection. explosivepro