2015年山东省枣庄市中考数学试卷
2015年山东省枣庄市中考数学试卷一、选择题:本大题共12小题,在每小题给出的四个选项中,只有一项是正确的,请把遮光器的选项选择出来,每小题选对得3分,选错、不选或选出的答案超过一个均计零分。1.(3分)下列各式,计算正确的是( )A.(a+b)2=a2+b2B.a•a2=a3C.a8÷a2=a4D.a3+a2=a52.(3分)如图,把一块含有45°的直角三角形的两个顶点放在直尺的对边上.如果∠1=20°,那么∠2的度数是( )A.15°B.20°C.25°D.30°3.(3分)如图是由6个相同的小正方体组成的几何体,那么这个几何体的俯视图是()A.B.C.D.4.(3分)实数a,b,c在...
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