问题
选择题
--- What are you doing?
---I’m _________ the Internet.
A．looking at
B．looking through
C．looking up
D．look after
答案
答案：B
题目分析：A、looking at 看…;B、looking through浏览； C、looking up 查字典： D、look after照看、照顾。句意 ：---你正在做什么？---我正在上网。根据题意故选B.