Over the last two decades （十年），the Earth has seen an increase in vegetation （植被）and China and India are leading the increase in greening on land. The result comes mostly from tree planting programs in China and intensive agriculture （集约农业）in both countries.
Researchers from Boston University found that global green area has increased by 5% since the early 2000s, an area equal to the size of Amazon rainforest. Among the increased area, China and India contribute to about 33%, especially China, with 25% itself. China's great contribution came mostly from its programs to protect and expand forests, which is about 42%. These programs were developed in an effort to reduce the effect of deserti^cation, air pollution and climate change.
Another 32% of the greening change in China, and 82% in India, resulted from intensive agriculture of food crops. The land area used to grow crops in China and India has not changed much since the early 2000s. Yet both countries have greatly increased the total green area and food production in order to feed large populations. The lead author Chi Chen of Boston University said, “That is a surprising finding, since it is generally believed that land degradation （退化）in populous countries is usually more serious.”
Rama Nemani, a research scientist at NASA's Ames Research Center, saw a positive message in the new findings. “Once people realize there is a problem, they tend to fix it,” However, the researchers rang bells as well. They pointed out that the gain did not necessarily fill up the loss of natural vegetation in tropical regions like Brazil and Indonesia.
36. What's the first paragraph mainly about?
A. The earth is becoming a green land.
B. China and India are forest countries.
C. China and India matter in greening the Earth.
D. China and India develop intensive agriculture well.
37. Why is Amazon rainforest mentioned in Paragraph 2?
A. To show its importance to the planet.
B. To call on people to protect rainforests.
C. To clearly show the increased green area.
D. To be evidence of the lost natural vegetation.
38. What benefits can China's tree planting programs bring?
① Reducing air pollution. ② Increasing rich land for crops.
③ Helping with climate control. ④ Controlling the desertification.
A.①②③ B.①③④ C.①②④ D.②③④
39. What can we infer from the last paragraph?
A. Brazil and Indonesia do not protect their forests.
B. The findings discouraged belief of a green world.
C. Humans are creative enough to solve all problems.
D. More efforts are needed to protect natural vegetation.
40. Where does the text probably come from?
A. A newspaper. B. A travel brochure.
C. An interview. D. A geography textbook.

36~40 CCBDA