◎ 题干
______ the task is difficult, they managed to complete it on time.
A.BecauseB.ThereforeC.AsD.Though
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ______ the task is difficult, they managed to complete it on time.A.BecauseB.ThereforeC.AsD.Though…”主要考查了你对  【并列连词】【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。