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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1202

What is even more important is______ the earth cooled down, water began to appear on its surface.

A.that B.that as C.which D.which as
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Whatisevenmoreimportantistheea