单选题
Selecting a mobile phone for personal use is not an easy task because technology ______ so rapidly.
A.is changing
B.has changed
C.will have changed
D.will change
A
B
C
D
【正确答案】
A
【答案解析】
[解析] because所在的句子是从句部分,故用现在时,因此C、D选项可以排除,A项表示此动作的进行,故选A。
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