B(2025·南通市海门区期末)
Global climate change is a very important problem nowadays. The world is getting warmer and warmer. We can feel that the temperature is rising and in some places, the ice in high mountains is melting. How can we slow down the melt? Some scientists are trying to solve the problem.
Wearing "clothes"
In the 1990s, people in Switzerland put white "blankets" on ski areas. The white colour can not only reflect(反射) the sunshine but also keep the ice cool. The blankets are made of wool, as a result that rain can go through the blankets and become ice. It can slow down the melt by about 50% to 70%. Today, the "blankets" in Switzerland cover 10,000 to 50,000 square metres of ice.
Painting the rocks
Farmers in the Andes Mountains in Peru use a similar idea. Above 5,000 metres, they paint the rocks with white "paint". The paint is made of water, sand and soap. The soap helps it stick to the rocks. The white rocks can be 16℃ cooler than the dark rocks.
Creating snow
Scientists in an organization called Glaciers Alive turn to man-made snow for help in Switzerland. In winter, they use water from a small lake up in the mountain. The water goes down some pipes. On the pipes, there are shower heads. The water flows out from the pipes and becomes snow on the mountain.
If everyone can understand the importance of protecting the earth and take action at once, it will make a difference to the world.
(
D
)6. Why did people make the "blankets" white?
A. The white colour has the feel of wool.
B. Rain can go through white "blankets" easily.
C. They want the "blankets" to look like the ice.
D. The white colour helps the ice get less sunshine.
(
D
)7. From the passage we can know
.
A. the ice flows out from the pipes and becomes snow on the mountain
B. the white colour can not only reflect the sunshine but also keep the ice warm
C. the "blankets" in Switzerland cover 1,000 to 50,000 square metres of ice
D. the paint that farmers in the Andes Mountains use is made of water, sand and soap
(
A
)8. What do scientists from Glaciers Alive do to slow down the melt?
A. They use water to create snow in winter.
B. They paint the rocks in Switzerland white.
C. They use small lakes to keep snow and ice.
D. They move rain up on the mountain with pipes.
(
C
)9. What is the main idea of the passage?
A. People should make better use of the sunshine.
B. People from different countries are working in a team.
C. People are working hard to keep high mountains cool.
D. People are trying to stop the world from getting cooler.
