听力测试。 1. When did the man's son graduate? [ ] A. In 1981. B. In 1982. C. In 1983. 2. Where does the conversation probably take place? [ ] A. In a hotel. B. In a restaurant. C. In a supermarket. 3. What is the possible relationship between the speakers? [ ] A. Mother and son. B. Employer and employee. C. Wife and husband. 4. What happened to the woman yesterday? [ ] A. She missed a train. B. She was caught in a traffic jam. C. She had a car accident. 5. Why didn't the man go to the party? [ ] A. He hadn't been invited. B. He didn't feel like going. C. He didn't think it would be fine.