C

　　The tropical rainforests of West Africa, Brazil, Latin America and Southeast Asia are some of the most important environmental regions of the world. They hold millions of unique plants, animals, and people. However, they are being destroyed rapidly.

　　Several factors are contributing to the destruction of the rainforests. One of the main causes is logging. Millions of trees are cut down every year, often illegally. The most valuable wood is taken and not replaced. Mining is another reason. Mining companies cut down trees to get gold and other minerals. Their activity often causes pollution.

　　Rainforest destruction has many serious effects. A tragic effect of the loss of the rainforests is the extinction of plants and animals that could provide us with food, medicine or valuable products. Thousands of species disappear each year. One surprising result of the destruction of the rainforests is that nutrients in the soils are washed away. When the trees are cut down, the soil is exposed to the heavy rain and quickly becomes infertile and useless. One of the most serious effects is global warming. This can have huge consequences for the world’s climate.

　　In summary, rainforests are important for the environment. They are potentially a huge source of materials. However, human activities are damaging this treasure. If we do not take action now, this vital part of our heritage will be lost forever.

　　61. The rainforests are being destroyed because ______.

　　A. millions of trees are cut down B. people set fire to them

　　C. many trees are washed away D. the land becomes infertile

　　62. Destruction of the rainforests may cause the following results EXCEPT ______.

　　A. the extinction of plants and animals

　　B. lack of nutrients in the soil

　　C. global warming

　　D. lack of food for all human beings

　　63. Which of the following statement is NOT TRUE?

　　A. Rainforests grow in many regions, such as West Africa.

　　B. Many special animals and plants can only be found in tropical rainforests.

　　C. Rainforests are important because they can be possibly made into many materials.

　　D. Rainforests will one day lose forever.

　　64. The passage tells us the following EXCEPT ______.

　　A. rainforests are important to our environment

　　B. rainforests are in danger right now

　　C. damaging rainforests does no harm to development

　　D. rainforests have some unique animals

　　65. Continuing the passage, we should write ______.

　　A. the importance of rainforests

　　B. the measures we should take to protect rainforests

　　C. the reasons for protecting rainforests

　　D. the effects rainforests have on climate.