Ⅳ. Complete the passage.（阅读下面短文，在空白处填入一个适当的单词或填入括号内的单词的正确形式。）
Mount Qomolangma, standing at around 8,848.86 metres, is the world's 1. (high) mountain above sea level. But did you know that its height is growing? Scientists say the huge mountain grows by as much as about two millimetres(毫米) every year. Two millimetres is very tiny, 2. the change will be big over time.
In a study, researchers have suggested that Qomolangma is growing because 3. a nearby river, the Arun. This powerful river 4. (run) along the Himalayas and washes away rocks and soil. Then 5. huge and deep gorge(峡谷) is created. As there is now less ground material left in that area, the crust(地壳) becomes lighter as well. This allows the crusts 6. (push) against each other and go upwards. Many 7. (year) later, the whole process raises the height of the land.
8. makes Qomolangma grow so rapidly? Researchers discovered that with a lot more water going through the Arun, the river would wash away more rocks and soil. As a result, the gorge becomes even 9. (big) in a shorter time, causing Qomolangma to grow more quickly. It is 10. (real) amazing to think about how nature can change the world's highest mountain!

1. highest 2. but 3. of 4. runs 5. a 6. to push 7. years 8. What 9. bigger 10. really

Ⅴ. Reading expression.（阅读表达。）
A Chinese boy named Yue Kailang climbed a mountain to draw attention to climate change.
For 14 days, Yue Kailang experienced all these like snowstorms and a freezing temperature of $-20°\mathrm{C}$ while climbing Mount Muztagata in Xinjiang. The 16-year-old boy from Beijing finally reached the top of the mountain at 7,546 metres.
Yue was the youngest in the “Climate Action” climbing team. The project’s goal was to make people realize the danger of global warming by visiting snowy mountains.
“I loved nature when I was a kid. I often climbed mountains in Beijing. In recent years more and more news reports have talked about the environment being destroyed, and I feel quite upset about it,” said Yue.
“Mount Muztagata is an ideal place to research climate change because there are large areas of mountain glaciers(冰川),” said Yue.
Along the way, Yue also collected snow samples(样品), which was part of the project’s tasks. The samples will be given to scientists to study how air pollution forms.
“We say ‘saving Earth’ every day, but I think taking real action is more important than just talking,” said Yue. “I hope my story can draw more young people’s attention to the serious problem of global warming. What I’ve experienced has shown that global warming is really not far away.”
1. What did Yue Kailang climb mountains to draw attention to?

2. How long did Yue Kailang’s experience of climbing last?

3. How old was Yue Kailang when he reached the top of Mount Muztagata?

4. What place is an ideal place to research climate change?

5. Should we do something helpful for our Earth? Why or why not?

1. Climate change. 2. For 14 days. 3. 16 years old. 4. Mount Muztagata. 5. Yes, we should. Because we have only one Earth, we should protect it.（答案不唯一，合理即可）