◎ 题干
Sam _____ some knowledge of the computer just by watching others working on it.

[     ]

A. brought up
B. looked up
C. picked up
D. set up
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Sam _____ some knowledge of the computer just by watching others working on it. [ ]A. brought up B. looked upC. picked up D. set up …”主要考查了你对  【动词短语】  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。