| 听下面一段材料, 回答第1-4 题。 |
| 1. For how many years have hot air balloons been used for sports? |
| A. About 2 years. B. About several hundred years. C. About 200 years. |
| 2. Why do most balloonists like to use hot air balloons? |
| A. They are safer. B. They are larger. C. They are easier to store. |
| 3. What is the best time for most balloon flights? |
| A. Only in the, morning. B. During the early afternoon. C. In the early morning or the late afternoon. |
| 4. Finally who succeeded in crossing the Atlantic in a balloon? |
| A. An American, B. Several Frenchmen. C. Three Americans. |