◎ 题干
In order to evaluate the effect that the computer has ____ people's life, they have handed out
questionnaires to more than one thousand young citizens, all of_____ picked out at random.

[     ]

A. on; whom
B. for; them
C. in; whom
D. on; them
◎ 答案
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◎ 解析
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◎ 知识点
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