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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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