题目

He goes to the same university __________ his father did. A.like                  B.that                 C.where              D.as 答案:D20.金属R投入硫酸铜溶液中,有红色固体析出;镁条插入R的硫酸盐溶液中,有R析出,则R、Mg、Cu的金属活动性顺序是(  )A.Cu>R>MgB.Mg>R>CuC.R>Mg>CuD.Mg>Cu>R
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