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    【题目】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

    【答案】C

    【解析】句意：Sam只通过观看别人操作电脑便学到了一些电脑知识。本题考查动词短语辨析。bring up抚养；look up抬头看，查询；pick up好转，开车接人，认出，学会；set up建造，搭起。根据句意选C项。

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