C
Rainforests provide much of the world's oxygen. People have been trying to protect them for years. But few people know about another type of forest, the cloud forest. It is just as important to humans.
These wet wooded cloud forests are on top of mountains, mainly in the tropics (热带地区) of African and Central and South American countries. They are called cloud forests because their height leads to the formation (形成) of clouds among the trees. The water in the clouds gathers on the leaves and then falls into small rivers below, which flow into towns at the bottom of the mountains. Cloud forests can absorb (吸收) about sixty percent of the yearly rainfall in their areas. The water is important to the plants and people there.
Cloud forests are also home to plants that can't be found anywhere else. In fact, there are so many plants that scientists haven't made a complete list of them yet.
Cloud forests are being destroyed at an increasing speed. Trees are being cut down and roads are being built in their places. Some people try to plant new trees to save the forests but that's difficult. Because the plants there are so special. There's plenty of work to be done, but saving the cloud forests is still possible with creative solutions.
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C
) 32. Where can you probably find cloud forests?
A. In Antarctica. B. Far from the equator (赤道). C. In an African country. D. At the foot of mountains.
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C
) 33. How much rainfall can be taken by the cloud forests in their areas every year?
A. About 40%. B. About 50%. C. About 60%. D. About 70%.
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D
) 34. What is the main idea of Paragraph 3?
A. Cloud forests are short of plants. B. Scientists are working on a list. C. Cloud forests are getting smaller. D. Cloud forests house many plants.
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A
) 35. What will be talked about in the next part of the passage?
A. Ways to protect cloud forests. B. Goals of cloud forests protectors. C. Difficulties in planting new trees. D. Success in getting wide support.
