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: