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 Thenumberofsmokers,   isreported,hasdroppedby17percent...

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問題詳情:

 Thenumberofsmokers,   isreported,hasdroppedby17percent...

 The number of smokers,    is reported, has dropped by 17 percent in just one year.

A. it     B. which       C. what           D. as

【回答】

D

知識點:複合句

題型:選擇題