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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 245

There seemed to be no human beings in that village, and the only ______ of life was a boat tied to a tree.

A.symbol B.mark C.signal D.sign
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Thereseemedtobenohumanbeingsin