Selecting a mobile phone for personal use is not easy task because technology_____so rapidly.（2002 春 上海）
A.is changing \x05\x05\x05B.has changed
C.will have changed \x05\x05D.will change
人气：476 ℃ 时间：2020-04-02 23:42:08
解答
A.is changing.
has changed 规在完成式表示变革这个动作已经完成,但事实上科技还在不断变革中,所要要选一个进行时态：is changing.
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