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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 856

_____ China’s reform and opening up in late 1978, its quick development has aroused worldwide attention, which has made America anxious about it.

A.When B.As C.While D.Since
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China’sreformandopeningupinlat