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    —The 3G mobile phone has influenced people’s life a lot since it ___

    A. invents B. invented

    C. is invented D. was invented

     

    D

    【解析】

    试题分析：句意：自从3G手机被发明，他们已经对人们的生活有了很大的影响。since自从……，后加过去时态的句子或过去的时间点。被动语态表示主语是动作的承受者，即行为动作的对象。被动语态由“助动词be＋及物动词的过去分词”构成。一般过去式的被动语态构成was／were＋tdone，根据语境故选D

    考点：考查被动语态的用法。

     

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