题目内容
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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题目内容
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