2012年广西南宁市中考数学试卷含答案解析
2012年广西南宁市中考数学试卷一、选择题(共12小题,每小题3分,满分36分)1.(3分)4的倒数是( )A.﹣4B.4C.﹣D.2.(3分)如图是由六个小正方体组合而成的一个立体图形,它的主视图是( )A.B.C.D.3.(3分)芝麻作为食品和药物,均广泛使用.经测算,一粒芝麻约有0.00000201千克,用科学记数法表示为( )A.2.01×10﹣6千克B.0.201×10﹣5千克C.20.1×10﹣7千克D.2.01×10﹣7千克4.(3分)下列图形中既是轴对称图形,又是中心对称图形的是( )A.B.C.D.5.(3分)下列调查:①调查一批灯泡的使用寿命;②调查全班同学的身高;...
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