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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 318

Languages across the world are becoming extinct ______ endangered mammals and four times endangered birds.

A.at twice the rate of B.as twice fast as
C.twice faster as D.twice at rate of
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Languagesacrosstheworldarebeco