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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1440

Thirty years ago this month,China's leaders launched an economic revolution.___________the door to free market reforms and foreign trade.

A.to open B.opened C.opening D.having opened
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Thirtyyearsagothismonth,Chinas