听下面一段独白，回答以下小题。
1. What does ASO-S mainly do?
2. How long will ASO-S stay in orbit at least?
3. Why is ASO-S so meaningful?
1. What does ASO-S mainly do?
| A．Do solar observation. |
| B．Study Earth's atmosphere. |
| C．Make weather forecasting. |
| A．Four years. | B．Forty hours. | C．Seventy years. |
| A．It can block the sun's radiation. |
| B．It may fill China's gap in the field. |
| C．It is the first solar satellite globally. |
更新时间：2021-03-26 20:35:34
|
【知识点】 天体和宇宙
