Our country _____ great changes in the last 30 years.

A. has experienced
B. experienced
C. experimented
D. has experimented
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科目：高中英語 來源：0110 月考題 題型：單選題

Our country _____ great changes in the last 30 years.
[     ]
A. has experienced
B. experienced
C. experimented
D. has experimented

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