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    wecooperatewitheachother,wewon'tmakeanybreakthrough...

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問題詳情:

    wecooperatewitheachother,wewon'tmakeanybreakthrough...

     we cooperate with each other , we won't make any breakthrough in the research.

A. Because          B. Unless         C. When       D. While

【回答】

B

知識點:連詞

題型:選擇題