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题目内容
（东华大学大学英语4）
50. Selecting a mobile phone for personal use is no easy task because technolgy ___so rapidly. 选择一款个人使用的手机不是一件容易的事，因为科技正高速发展。
A. is changing
B. has been changed
C. will have changed
D. will change
A. is changing
B. has been changed
C. will have changed
D. will change
参考答案