一、听力练习：
A. 选择合适的应答句：
1. （ ）
A. I dislike it. B. I’m full.
C. Yes, I do. D. I can’t get to my food.
2. （ ）
A. Hours. B. Months. C. Years. D. A long time.
3. （ ）
A. Plants will produce oxygen. B. We will live in domes.
C. We will carry air tank. D. We will wear helmets every day.
B. 根据所听对话，选择正确答案：
