题目内容

The mobile phone has influenced people’s life a lot since it _______.
A．inventsB．invented
C．is inventedD．was invented
D

试题分析：句意：自从手机被发明以来，他已经太多地影响了人们的生活。Since引导的从句主句用完成时从句用一般过去式，根据题意可知用被动语态，根据句意故选D
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