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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 291

The split between humans and apes is believed by scientists______15 to 20 million years ago.

A.to be occurring B.having occurred C.to have occurred D.to occur
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Thesplitbetweenhumansandapesis