◎ 题干
The process of producing electricity may also give out CO2, ______ you heat your house with electricity instead of charcoal.
A.as long asB.as soon asC.as ifD.even if
◎ 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 process of producing electricity may also give out CO2, ______ you heat your house with electricity instead of charcoal.A.as long asB.as soon asC.as ifD.ev…”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。