【題目】Sam _____ some knowledge of the computer just by watching others working on it.

A. picked up B. looked up

C. brought up D. set up

【答案】A

【解析】

試題分析：考查短語辨析。picked up 意為“拾得，撿起，學(xué)得”；looked up意為“向上看”； brought up意為“撫養(yǎng)，提出”； set up意為“建立”根據(jù)句意，可知A項是正確的。句意：山姆僅僅通過看別人使用電腦就學(xué)會了一些關(guān)于使用電腦的知識。故選A。

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