题目内容
（请给出正确答案）
[主观题]
According to the author, dramatic changes took place in _________（）
A．cities but not countryside of China
B．countryside but not in large cities
C．both cities and countryside of China
D．everywhere
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A．A.In the past decade, dramatic changes have taken place in the structure of the world economy.
B．B.In the past decade, dramatic changes took place in the structure of the world economy.
C．C.In the past decade, dramatic changes has taken place in the structure of the world economy.
