问题
选择题
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
答案：C
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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