Question

The boy doesn’t know how to _________ English words in a dictionary.

1. A.
   look up
2. B.
   look after
3. C.
   look at
4. D.
   look for

Answer 1

A
此题重点考查look的相关的短语。Look up表示仰望或查询；look after表示照顾照料；look at表示看看；look for表示寻找。根据句意可知在字典里查询单词要用look up。