问题
单项选择题
Selecting a mobile phone for personal use is no easy task because technology（）so rapidly.
A.is changing
B.has been changed
C.will have changed
D.will change
答案
参考答案：A
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Selecting a mobile phone for personal use is no easy task because technology（）so rapidly.
A.is changing
B.has been changed
C.will have changed
D.will change
参考答案：A