Selecting a mobile phone for personal use is not easy task b

Selecting a mobile phone for personal use is not easy task because technology_____so rapidly.（2002 春上海）
A.is changing x05x05x05B.has changed
C.will have changed x05x05D.will change

dracuula 1年前已收到2个回答举报

song1980 幼苗

共回答了24个问题采纳率：87.5% 举报

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.

1年前

rikxie 幼苗

共回答了724个问题举报

A. is changing 因为技术在不断变化，所以挑选手机不是一件容易事

1年前

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你能帮帮他们吗

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