第12题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. By going on a diet. B. By doing physical exercise. C. By having fewer meals. D. By eating fruit and vegetables. 参考答案:B 答案解析:[听力原文] W: When I go on a diet, I eat only fruit, and that takes off weight quickly. M: I prefe