| 听下面一段对话，回答1-4题。 |
| 1. How does the man feel about David's way of sleeping? |
| A. It's harmful. B. It's strange. C. It's the best. |
| 2. Where did David get the way of sleeping? |
| A. He learned from others. B. He read from a book. C. He learned from his father. |
| 3. How many hours does David sleep a day? |
| A. Four. B. Six. C. Seven. |
| 4. What does the man mean at the end of the conversation? |
| A. People should develop a habit like David's. B. People need longer hours of sleep. C. People have different sleeping habits. |