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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1679

Effective measures should be taken to ______ the rare species _______ being over-killed by human beings.

A.keep; against B.prevent; from
C.stop; against D.protect; from
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Effectivemeasuresshouldbetaken