Inordertoevaluatetheeffectthatthecomputerhas

问题详情：

 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 whom picked out ______ random.

A. on; with   B. for; at   C. on; at   D. for; with

【回答】

C

知识点：介词

题型：选择题