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    Selecting a mobile phone for personal use is not an easy task because technology ________ so rapidly.

    A．is changing B．has changed

    C．will have changed D．will change

     

    A

    【解析】

    本句的主句一般现在时表达的是目前的情况，而“科技发展迅速”也是现阶段正存在的一种状态，不是在过去，也不是在将来，因此只能用现在进行时表达。

     

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