Buying a mobile phone for personal use is not an easy job because technology _____ so rapidly.

A. is changing
B. has changed
C. will have changed
D. will change
A
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科目：高中英語 來源：同步題 題型：單選題

Buying a mobile phone for personal use is not an easy job because technology _____ so rapidly.
[     ]
A. is changing
B. has changed
C. will have changed
D. will change

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