◎ 题干
Unlike watching TV, reading is a highly active process ____ it requires attention as well as memory and imagination.

A. until
B. but
C. unless
D. for
◎ 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“Unlike watching TV, reading is a highly active process ____ it requires attention as well as memory andimagination. [ ]A. until B. but C. unless D. for …”主要考查了你对  【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。