Question

【题目】根据短文内容，从短文后的七个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。
It is said that farmers or peasants, especially those in developing countries, are often criticized for cutting down forests. But a new study suggests that many farmers recognize the value of keeping trees.
Researchers using satellite images found at least ten percent trees cover on more than one billion hectares of farmland. Earlier estimates were much lower but incomplete. The authors of the new study say it may still underestimate the true extent worldwide.
The study found the most trees cover in South America. North Africa and West Asia have the least.
The study found that climate conditions alone could not explain the amount of trees cover in different areas.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.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.Even under drought (干旱) conditions, trees can often provide food and a way to earn money until the next growing season.
Some trees act as natural fertilizers. They take nitrogen (氮气) out of the air and put it in the soil. Scientists at the Center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths. Trees also capture carbon dioxide, a gas linked to climate change.
A. Nor could the size of nearby populations, meaning people and trees can live together.
B. He says farmers are acting on their own to protect and plant trees.
C. Almost all of it is covered by trees.
D. They also help prevent soil loss and protect water supplies.
E. He devotes most of his time to making people realize its importance.
F. That is nearly half of the farmland in the world.
G. Next comes Africa south of the Sahara, followed by Southeast Asia.

Answer 1

【答案】F；G；A；B；D
【解析】本文是一篇说明文，介绍现在世界上农场树林占有的面积还是很多的，农民正意识到树木对人对环境的重要性。
（1）考查上下文理解和逻辑推理。根据空前“Researchers using satellite images found at least ten percent trees cover on more than one billion hectares of farmland.”可知，此处在说树木在农场的覆盖量的问 题，所以F项内容符合上下文。故选F。
（2）考查上下文理解和逻辑推理。根据空前“The study found the most trees cover in South America. “以及空后”North Africa and West Asia have the least.”可知，树木在世界各地的覆盖率的排名。故选G。
（3）考查上下文理解和逻辑推理。根据前后的内容可知，此处在讲述造成不同地区森林覆盖率不同 的因素，所以A项内容符合上下文。故选A。
（4）考查上下文理解和逻辑推理。根据空后“The problem, he says, is that policy makers and planners have been slow to recognize this and to support such efforts.”可知，问题在于政策制定者和规划者迟迟不承 认这一点，并不支持这种努力。所以，此处要将现在的农民具体是怎么做的。故选B。
（5）考查上下文理解和逻辑推理。根据前后的内容可知，此处在讲述农民们砍伐木材做什么用途， 所以D项内容符合上下文。故选D。