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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 1626

Every necessary means____ to protect milu deer which____ very valuable to us. As a result, the number of milu deer is increasing.

A.are used; is B.is being used; is
C.have been used; are D.has been used; are
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Everynecessarymeanstoprotectmi