练习册

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    A man does not know the difficulty of anything he does it personally . A. although B. if C. because D. unless 答案是D项.连词unless本身具有否定意义:if - not.引导的是否定的条件句.这种否定的条件句从反面来表达强烈的语气.一些语法学家称它为"反面的唯一条件句"又如:One cannot master a foreign language well unless he studies it hard . (不下苦功夫.是学不好的一门外国语的.) 【查看更多】

     

    题目列表(包括答案和解析)

    A man does not know the difficulty of anything _____ he does it personally .

         A. although         B. if             C. because        D. unless

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    A man does not know the difficulty of anything_________ he does it personally.

    A. although      B. if            C. because       D. unless

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    A man does not know the difficulty of anything _____ he does it personally .

         A. although         B. if                    C. because        D. unless

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    A man does not know the difficulty of anything_________ he does it personally.

    A. although     B. if            C. because       D. unless

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    A man does not know the difficulty of anything_________ he does it personally.

    A. although     B. if            C. because       D. unless

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