◎ 题干
— What a shame ! It turned out to be a failure.
— We missed a process,_______ we could not succeed in the experiment.
A.and otherwiseB.and thereforeC.or perhapsD.but luckily
◎ 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“— What a shame ! It turned out to be a failure.— We missed a process,_______ we could not succeed in the experiment.A.and otherwiseB.and thereforeC.or perhapsD…”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。