When you are confused about some words in reading you can the dictionary.A. have a look

问题补充：

When you are confused about some words in reading, you can the dictionary.

A. have a look at

B. look up

C. check

D. refer to

答案：

A. have a look at

B. look up

C. check

(答案→)D. refer to

解析：此题主要考查look up与refer to 的区别，look up 查字典，宾语是具体的内容，如：word, refer to 的宾语是工具，题中的宾语为the dictionary是工具，所以用refer to，选D。