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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1837

China sent up two manned spaceships and they were also great scientific _______ in the world.

A.campaigns B.surprises C.achievements D.discoveries
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Chinasentuptwomannedspaceships