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1、2011-2012学年七年级数学下学期期中质量调研试题(无答案)人教新课标版一、选择题(每题3分共39分)1.如图,下列说法不正确的是················································()A、∠1与∠2是同位角B、∠2与∠3是同位角C、∠1与∠3是同位角D、∠1与∠4是内错角2.下列说法中,正确的是·····················································()(A)相等的角是对顶角(B)有公共顶点,并且相等的角是对顶角(C)如果∠1
2、与∠2是对顶角,那么∠1=∠2(D)两条直线相交所成的两个角是对顶角3.下列命题中,真命题是·······················································().A.相等的角是对顶角B.两条直线被第三条直线所截,同位角相等C.在同一平面内,垂直于同一条直线的两条直线平行D.同旁内角互补4.设“●”“▲”“■”表示三种不同的物体,现用天平称了两次,情况如图所示,那么●、▲、■这三种物体按质量从大到小的顺序排列为···································(
3、 )A.■●▲B.■▲●C.▲●■D.▲■●5.下列不等式中,是一元一次不等式的是········································()A2x-1>0B-1<2C3x-2y<-1Dy2+3>56.地理老师介绍到:长江比黄河长836千米,黄河长度的6倍比长江长度的5倍多1284千米,小东根据地理教师的介绍,设长江长为x千米,黄河长为y千米,然后通过列、解二元一次方程组,正确的求出了长江和黄河的长度,那么小东列的方程组可能是()A、B、C、D、7.方程组的解为则被遮盖的两个数分别为()A.2,1
4、 B.5,1 C.2,3 D.2,48.一杯可乐售价1.8元,商家为了促销,顾客每买一杯可乐获一张奖券,每三张奖券可兑换一杯可乐,则16.2元可以得到可乐················································()A.9瓶B.11瓶C.12瓶D.13瓶9.如图所示,已知DE∥BC,CD是∠ACB的平分线,∠B=72°,∠ACB=40°,那么∠BDC等于····························································
5、······()A.78°B.90°C.88°D.92°10..如图4所示,AB∥CD,则∠A+∠E+∠F+∠C等于····························()A.180°B.360°C.540°D.720°11如图,直线a、b被直线c所截,给出下列条件,①∠1=∠2,②∠3=∠6,③∠4+∠7=180°,④∠5+∠8=180°其中能判断a∥b的是·····················()A.①③B.②④C.①③④D.①②③④12.一次智力测验,有20道选择题.评分标准是:对1题给5分,错1题扣2分,不答
6、题不给分也不扣分.小明有两道题未答.至少答对几道题,总分才不会低于60分.则小明至少答对的题数是·······································································()A.12道B.13题C.14题D.15题13.不等式4(x2)>2(3x+5)的非负整数解的个数为·····················()A.0个B.1个C.2个D.3个一.填空题(每题3分共21分)1.如图所示,一条公路两次拐弯后和原来的方向相同,即拐弯前、后的两条路平行,若第
7、一次拐角是150°,则第二次拐角为________.2.方程在自然数范围内的解____________________________3.、是方程的解,则的值是______4.若5.命题“内错角相等”题设_________________结论_______________,是_____命题(填真或假)6.若,则=____________7.如图∠B=∠D=∠E,那么图形中的平行线有________________________________。二.解方程组(每题5分共10分)1.2.一.解不等式组(本题6分)五.证明题(本
8、题10分)如图,E是DF上一点,B是AC上一点,∠1=∠2,∠C=∠D,求证:(1)BD//CE(2)∠A=∠F。六.应用题(每题7分,共14分)1.3个小组计划在10天内生产500件产品(每天生产量相同),按原先的生产速度,不能完成任务,如果每个小组比原先多生产1件产品,就能提前完成任务