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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 346

An engineer has designed _______ robot that can work in _______ deep sea to clean waste.

A.a; the B.a; a C./; the D.the; /
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Anengineerhasdesignedrobotthat