1. What was the weather like when Yeshe Dolkar saw snow leopards a year ago?
Cold and snowy.
2. When did China set up Sanjiangyuan National Nature Reserve?
On August 19th, 2000.
3. How does the writer show the change of the population of wild animals?
By giving numbers.
4. What are local people called on to do on the grasslands?
To pick up waste.
5. What does the writer mainly want to tell us through this passage?
Protection of Sanjiangyuan.
答案：1. Cold and snowy.
2. On August 19th, 2000.
3. By giving numbers.
4. To pick up waste.
5. Protection of Sanjiangyuan.
