I just can’t figure out the meaning of the word---so I’ll have to the dictionary.
A. look up
B. go over
C. check in
D. refer to
网友回答
A. look up
B. go over
C. check in
(答案→)D. refer to
解析：因为refer to可以表示“查阅”字典，“查看”讲稿、“询问”专家等。注意比较：look up the word in the dictionary。go over复习、检查；check in登记、报到。