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

题型：同步题难度：来源：

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

举一反三

He _____ that building,and just kept silence.      [     ]
A. stared at
B. searched for
C. found out
D. thought out

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Faced with so many people, he just couldn"t _____ his  absence from school.        [     ]
A. tell apart
B. account for
C. give away
D. explain to

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We are going to _____ this question at the next meeting.         [     ]
A. bring up
B. take down
C. look up
D. bring back

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The black clouds have _____ the sun and it is going to rain. [     ]
A. blocked in
B. blocked off
C. blocked out
D. blocked up

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The main roads of city have been   _____.[     ]
A. blocked off
B. put out
C. taken out
D. left out

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