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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 2074

A public health campaign _____ the number of heart disease deaths by 80 percent over the past three decades.

A.had reduced B.had been reduced
C.has reduced D.has been reduced
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Apublichealthcampaignthenumber