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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1935

----In recent years, _____problem of global warming has become very serious.
----That’s right. People are facing _____diversity of natural disasters now.

A./, a B.a, the C.the, a D.a, a
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Inrecentyears,problemofglobalw