问题补充:
---Could you tell me what time the train leaves Hefei for Beijing?
---I’m afraid you need to on the Internet.
A. look for it
B. look at it
C. look it over
D. look it up
答案:
A. look for it
B. look at it
C. look it over
(答案→)D. look it up
解析:look for寻找;look at看;look it over检查;look it up查阅。句意:你能告诉我火车什么时候离开合肥去北京吗?恐怕你必须去在网上查阅了。结合语境可知选D。