题目内容：

阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

High on the Qinghai---Tibet Plateau(高原)1. (lie) China’s “water tower” Sanjiangyuan. 2. is home to the head-waters of China’s three rivers. However, human activities 3.(put) this ecosystem 4. risk in recent years.

In 2016, the Chinese government set up Sanjiangyuan National Park in Qinghai province. With Sanjiangyuan 5. (take) the lead, other regions have been chosen 6. (carry) out projects that together would form a national park system. The idea 7. a national park system should be realized was approved by President Xi, who said, “Building an ecological civilization bears great 8. (significant) in the development and progress of human civilization.”

9. (hopeful), the success of Sanjiangyuan will mark the start of a 10. (green) future.