【題目】It is not an easy task to choose a personal computer, for technology ________ rapidly.

A. is changing B. has changed C. changed D. will changed

【答案】A

【解析】

句意“選擇一個個人電腦不是一個簡單的任務(wù)，因為科技正在快速地改變”。根據(jù)句意可知，科技改變，是“現(xiàn)在正在改變”，用現(xiàn)在進行時am/is/are doing，故選A。

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