【答案解析】[听力原文] 17-20 W: Room service.Can I help you? M: Yes.I'd like a dinner for two.And would you please send it to the room? W: Sure.Your room number, please? M: Room 5003. W: Ok.We'll get it ready in ten minutes. M: Thanks.By the way, was my room cleaned this morning? W: Yes.We clean all the rooms in the morning. Is there anything wrong? M: No.not really.Just that my wife can't find her watch anywhere. W: Just a minute.I'll go up and check it。