【題目】I am not sure _______the Chinese football team has won in the 16th Asian Cup or not.

A. if B. whether C. that D. as

【答案】B

【解析】

試題分析：句意：我不能確定中國足球隊是否已經(jīng)在16屆世界杯獲勝。if 和whether都能引導賓語從句，但是whether可以和or not連用。故選B。

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