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    We can’t do well in examination we study hard in school time.( ) A.if B.and C.since D.unless 答案:D 联系上下句应该是表达“如果不--.我们就无法-- 这样一种含义.unless=if...not,符合句意. 【查看更多】

     

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    We can’t do well in examination _________ we study hard in school time.

    A.if                               B.and        C.since                                    D.unless

     

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    We can’t do well in examination _________ we study hard in school time.

    A．if B．and C．since D．unless

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