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

Ais changing Bhas changed

Cwill have changed Dwill change

 

A

【解析】本句的主句一般現(xiàn)在時表達的是目前的情況,而科技發(fā)展迅速也是現(xiàn)階段正存在的一種狀態(tài),不是在過去,也不是在將來,因此只能用現(xiàn)在進行時表達。

 

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