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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1967

Flying kites, ______ some researchers point out, can not only bring about joy to us, but also promote our physical and mental health.

A.which B.what C.as D.where
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Flyingkites,someresearcherspoi