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  • 科目:英语
  • 题型:单选题
  • 难度:较难
  • 人气:586

Scientists generally agree that Earth's climate will warm up over the next 50 to 100 years __________ it has warmed in the 20,000 years since Ice Age.

A.as long as B.as much as
C.as soon as D.as well as
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ScientistsgenerallyagreethatEa