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：手机自从被发明起就很大程度地影响着人们。Invent与the mobile phone是动宾关系，因此要用被动语态。发明手机发生在过去，故选D。
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