题目

--Do you know Shanghai is one of_____ in he world?     ---Yes, it’s bigger than_____ city in China.A. the biggest city, any               B. the biggest cities, any   C. the biggest cities, any other    D. the bigger cities, any other 答案:C下列影响化学反应速率的因素中,是通过改变活化分子百分数来实现的是( )①改变气体物质的浓度 ②改变气体的压强③加入催化剂 ④改变气体的温度A.只有①② B.只有③④ C.只有①③④ D.①②③④
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