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】

本句的主句一般現(xiàn)在時(shí)表達(dá)的是目前的情況，而“科技發(fā)展迅速”也是現(xiàn)階段正存在的一種狀態(tài)，不是在過(guò)去，也不是在將來(lái)，因此只能用現(xiàn)在進(jìn)行時(shí)表達(dá)。

 

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