第4题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. The train is crowded. B. The train is late. C. The train is empty. D. The traifi is on time. 参考答案:B 答案解析:[听力原文] M:I’m sorry, Madam. The train is behind schedule. Take a seat, and I’ll inform you aS soon