Sam ______ some knowledge of the computer just by watching others working on it.

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问题 Sam ______ some knowledge of the computer just by watching others working on it.

选项 A、brought up
B、looked up
C、picked up
D、set up

答案C

解析 bring up表示“培育,提出,把……带到楼上,呕吐”;look up表示“查找,改 善,拜访,向上看”;pick up表示“拾起,无意地学会(技术,语言等)”;set up表示“建立,安排, 引起”。由题意可知C是正确答案。句子意思为:Sam仅仅通过看别人操作电脑就无意中学 会了一些电脑知识。
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