第二节（共5个小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Farmers, especially in developing countries, are often criticized for cutting down forests. But a new study suggests that many farmers recognize the value in keeping trees.
Researchers using satellite images found at least ten percent tree cover on more than one billion hectares(公顷) of farmland. 31 .
The study found the most tree cover in South America. 32 North Africa and West Asia have the least. And it also found that climate conditions alone could not explain the amount of tree cover in different areas. 33 . There are areas with few trees but also few people, and areas with many trees and many people. The findings suggest that things like land rights, markets or government policies can influence tree planting and protection.[]
Dennis Garrity heads the World Agroforestry Center. 34 The problem, he says, is that policy makers and planners have been slow to recognize this and to support such efforts.
The satellite images may not show what the farmers are using the trees for, but trees provide nuts, fruit, wood and other products. They provide windbreaks and shade from the sun. 35 Even under drought conditions, trees can often provide food and a way to earn money until the next growing season.
A. Almost all of it is covered by trees.
B. Nor could the size of nearby populations, meaning people and trees can live together.
C. He says farmers are acting on their own to protect and plant trees.
D. He devotes most of his time to making people realize its importance.
E. Next comes Africa south of the Sahara, followed by Southeast Asia.
F. They also help prevent soil loss and protect water supplies.
G. That is almost half the farmland in the world.
31-35 GEBCF
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Farmers, especially in developing countries, are often criticized for cutting down forests. But a new study suggests that many farmers recognize the value in keeping trees.
Researchers using satellite images found at least ten percent tree cover on more than one billion hectares(公顷) of farmland. 31 .
The study found the most tree cover in South America. 32 North Africa and West Asia have the least. And it also found that climate conditions alone could not explain the amount of tree cover in different areas. 33 . There are areas with few trees but also few people, and areas with many trees and many people. The findings suggest that things like land rights, markets or government policies can influence tree planting and protection.[]
Dennis Garrity heads the World Agroforestry Center. 34 The problem, he says, is that policy makers and planners have been slow to recognize this and to support such efforts.
The satellite images may not show what the farmers are using the trees for, but trees provide nuts, fruit, wood and other products. They provide windbreaks and shade from the sun. 35 Even under drought conditions, trees can often provide food and a way to earn money until the next growing season.
A. Almost all of it is covered by trees.
B. Nor could the size of nearby populations, meaning people and trees can live together.
C. He says farmers are acting on their own to protect and plant trees.
D. He devotes most of his time to making people realize its importance.
E. Next comes Africa south of the Sahara, followed by Southeast Asia.
F. They also help prevent soil loss and protect water supplies.
G. That is almost half the farmland in the world.
31-35 GEBCF
