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

103. The activity is called "saving the earth" which refers to more reduction of ____ caused to the world by freon (氟里昂)of refrigerators.

A.hurt B.harm C.destroy D.Damage
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103.Theactivityiscalledsavingt