题目内容

Selecting a mobile phone for personal use is not an easy task because technology ________ so rapidly.
A．is changingB．has changed
C．will have changedD．will change
A

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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