Question

【题目】If you want to learn more about this concept, you may _____ Professor Li’s paper.

A.look up to

B.add to

C.look forward to

D.refer to

Answer 1

【答案】D

【解析】

考查动词短语。句意：如果你想进一步了解这个概念，你可以参考李教授的论文。A. look up to尊敬；B. add to加入；C. look forward to期待；D. refer to涉及；参考。结合句意故选D。