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1、一、选择题(每小题只有一个选项符合题意,请将你认为正确的选项字母填入下表相应空格内,每小题2分,共24分)题号123456789101112选项1.的相反数是 A、B、C、D、32.下列代数式的值中,一定是正数的是A、B、C、D、正面3.如图所示几何体的主视图是A BCD4.数,在数轴上的位置如图所示,则是 A、正数B、零C、负数D、都有可能a0bx5.下列计算正确的是 A、B、 C、D、6.如果,那么a与b之间的关系是A、相等B、符号相同C、符号相反D、互为相反数7.数轴上与原点的距离等于2个单位的点表示的数是 A、0和2B、和2C、和
2、3D、和28.棱柱的侧面都是 A、三角形B、五边形C、长方形D、圆9.当时,下列代数式中值最大的是 A、B、C、D、strengthenthesenseofresponsibility,worktosolvethelackofdecentoccupationexplainaway,conductproblems.Toestablishtheoverallconcept,eliminatedepartmentalism.Strictassessmentandaccountability,tosolvethespiritualslack,nianq
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