四、阅读下面的短文并用英语回答问题
Xu Xiake was an explorer (探险者) of the late Ming dynasty who travelled to huge mountains and deep valleys in China. He was one of the greatest explorers in Chinese history.
He travelled so that he could feel strong winds beat his body; he travelled so that his feet could kiss the soil of the mountains.
After he died, Xu left behind his famous book, *Xu Xiake's Travels*, which provides meaningful materials to the Chinese geological study. It included a record of what he saw, heard and thought about during his travels and was a personal diary that was not published during his lifetime. It was said that Xu was a filial (孝顺的) son and the beginning purpose of his travel diary was to allow his mother to travel around the world through his eyes at home. He followed the ancient teaching that says, “When one's parents are alive, one must not travel to far places.” For this reason, when his mother was still alive, he mainly travelled the south - eastern half of the country and would not leave home for too long.
The most important part of his travels was his ten thousand - mile journey to the south - west. He travelled from Zhejiang to Jiangxi, Hunan, Guangxi, then Guizhou, and Yunnan. This journey took him four years and he wrote about ten times more than he did in the past. In the morning, he would be climbing the mountains and crossing rivers. At night, he would lay out a piece of paper and record his daily experiences beside an oil lamp.
Xu lived his life visiting mountains and rivers all day long. He was a great person in history. In fact, Xu who lived 400 years ago was more like today's backpackers — very cool!
1. How did Xu Xiake travel?
On foot.
2. What is the work *Xu Xiake's Travels* about?
What Xu Xiake saw，heard and thought about during his travels./Xu Xiake's travelling experiences.
3. What do you think of Xu Xiake? Why?
He was great and brave. Because it was hard to travel such a long way in ancient times，but he didn't give up.
