听力原文：W: Oh, Ken, I have been meaning to talk to you. M: Hi, Denise! What's up? W: I have this great job lined up to manage a clothing store at the mall. M: Oh, say in detail, please. W: Well, one of the professors in my department just told me about a summer practice program that is available. She thinks I might be able to practice in the office at the Wayfarer Hotel here in town. M: That sounds like a great opportunity, too. Why not take advantage of it? W: I'd love to, especially since I'm studying hotel management. It would be a great way to get some practical experience in my field. M: And you never know, it might lead to something with them after graduation. They're one of the biggest hotel chains in the area. W: You're right. But the problem is that I wouldn't be making nearly as much money as I would be working in the clothing store. Not to mention the discount I'd get on clothes there. M: How much money can you get from your practice work? W: Very little money. But I can get a free room and board for the summer. M: Well, if I were you, I'd take it anyway. You can always get a job during the school year next year to make a few extra bucks. Questions 19 to 22 are based on the conversation you have just heard. 19. Why does Denise like to talk to Ken? 20. Why might the summer practice be a good opportunity for Denise? 21. What's the main disadvantage of the summer practice for Denise? 22. What does Ken suggest Denise do? (23)