Question

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

Answer 1

C

考查短语辨析。bring up 培养，look up 查字典，pick up 捡起，接某人，偶然学到，set up建立。句意：Sam偶然学会了一些电脑知识仅仅看别人从事电脑工作。故选C。