【正确答案】 B

【答案解析】[听力原文] M: l'm excited about going to the concert at the campus pub on Saturday. It's supposed to be the best show of the year. You're coming, aren't you? W: I wish I could, but I already promised Lisa that I would cover both ofher night shifts at the movie store this weekend. M: Why did you do that? Did you forget about the concert? W: Actually, I really need the hours. Next semester is going to be really expensive. I have to buy a new psychology textbook that is going to cost me more than one hundred dollars. M: Have you looked in the used bookstore for it? I never buy my math textbooks new. W: That's what I would normally do, but it's a new edition this year. Some of the chapters are different, so I really need to buy the new one. M: That's too bad. I wish you could come to the concert. If it makes you feel any better, Matt won't be able to come either. W: Why is that? It's his favorite band! M: He has to go home for the weekend. His sister is getting married. What are the speakers discussing? 本题为主旨题，需要对对话内容加以总结。对话开头男士说周六可以去听音乐会，自己很兴奋，并觉得女士应该也会去，当听到女士说周末要替别人值夜班时男士很诧异，接着对女士这样做的原因进行了询问，故可知B项“女士不能去音乐会的原因”为两人谈话的主题。

【正确答案】 C

【答案解析】[听力原文] What will the woman do on Saturday? 对话开头，当男士提到音乐会的事情时，女士说真希望自己能去，但是她已经答应丽莎周末替她值两天的夜班，故可知C项为正确答案。

【正确答案】 A

【答案解析】[听力原文] Why does the woman have to buy a new psychology textbook? 对话中男士提醒女士到旧书书店看看，并说他从来不买新数学课本。女士回答说，其实她一般也会买旧书，但是今年是新版本，由此可知，女士必须购买新的心理学课本的原因是因为有了新版课本，本题应选A。

【正确答案】 C

【答案解析】[听力原文] What can be inferred from the conversation? 本题为推断题。对话最后男士提到，马特因为姐姐要结婚而不得不回家去，也不能去音乐会了；而且前面女士提到，这是马特最喜欢的乐队。由此可推断，马特其实也很想去音乐会，故C项正确。对话中女士说她要替丽莎值两天的夜班，并说下学期的书本费会很贵，自己需要多做些兼职来赚钱，由此可知A项“女士从不在周末工作”错误。