◎ 题干
—We’ll visit the Summer Palace_____ there is a heavy rain tomorrow.
— OK! Boating on the lake must be great fun.
A.ifB.as soon asC.unlessD.since
◎ 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“—We’ll visit the Summer Palace_____ there is a heavy rain tomorrow. — OK! Boating on the lake must be great fun.A.ifB.as soon asC.unlessD.since…”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。