题目内容

【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

【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

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