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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 877

We know that the Black Sea, one thousand years ago, was a fresh water lake about ________ and unconnected with the Mediterranean.

A.its two thirds present size B.two-thirds size of the present
C.its two-thirds of the present size D.two- thirds its present size
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