【正确答案】 B

【答案解析】[解析] W: Can I help you? M: Yes. I am a bit confused. (20) {{U}}My sociology, class requires reading a book titled Sociology and the Modern Age.{{/U}} According to the reading list, the book is in the library, but I couldn't find it. W: Do you have your reading list with you? May I see it? M: Yes, I put it in my sociology notebook. Oh, here it is. W: Let me see. (21){{U}}Your professor has placed this book on reserve. That means you cannot find it on the shelves in its usual place.{{/U}} You need to go to a special room called the reserve room. It's down the hall and to the right. M: I'm sorry--I still don't understand what you mean by on reserve. W: You see, your professor wants every one in the class to read the book. If one student removes the book from the library, other students can't read it. So, your professor has insured that all students have the opportunity to read it by placing it on reserve. M: So, will I be able to find this book? W: Yes, when a book is on reserve, a student can go to the reserve room for the book. The student must read it only in the library for a few hours. In this way, the book stays in the library for all students to use. M: Okay. Thank you. I understand now. W: Will there be anything else? M: No. (22){{U}}I am on my way to the reserve room.{{/U}} Thanks again! Q: Where does the conversation take place? [一点即通] 通过整段对话内容，可知两人在图书馆。故B)项正确。

【正确答案】 A

【答案解析】[解析] Q: What book does the man want to read? [一点即通] 男士说他的社会学课要求读一本Sociology and Modern Age，书单上显示就在图书馆里，但是他却找不到。故A)项正确。

【正确答案】 C

【答案解析】[解析] Q: Why does the man fail to find the book? [一点即通] 因为教授把这本书设为保留图书(placed it on reserve)，放在reserve room，所以他在通常的书架上找不到。故C)项正确。

【正确答案】 D

【答案解析】[解析] Q: Where is the man going? [一点即通Ion one's way to意为“去…的路上”，此处男士说他要马上去reserve room(保留图书室)。故D)项正确。 [未听先知] 根据选项中的worried，lost wallet，cinema，inquiry，search，police等信息，可以推断出本段对话可能与丢失东西有关。