◎ 题干
People are puzzled _____ they read the book.
A.the first timeB.at the first timeC.for the first timeD.at first
◎ 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“People are puzzled _____ they read the book. A.the first timeB.at the first timeC.for the first timeD.at first…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  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。