If you don’t know what it means the dictionary.A. look upB. refer toC. point toD. look o

问题补充：

If you don’t know what it means, the dictionary.

A. look up

B. refer to

C. point to

D. look out

答案：

A. look up

(答案→)B. refer to

C. point to

D. look out

解析：短语辨析。look up向上看，查阅； refer to涉及，参考； point to指向；look out当心，向外看。句意：如果你不知道他的意思，参考词典。refer to指的是参阅书籍， look up是查单词(而不是字典)，故选B。