Question

【題目】根據(jù)短文內(nèi)容，從短文后的七個選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。
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 (氮氣) 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】本文是一篇說明文，介紹現(xiàn)在世界上農(nóng)場樹林占有的面積還是很多的，農(nóng)民正意識到樹木對人對環(huán)境的重要性。
（1）考查上下文理解和邏輯推理。根據(jù)空前“Researchers using satellite images found at least ten percent trees cover on more than one billion hectares of farmland.”可知，此處在說樹木在農(nóng)場的覆蓋量的問 題，所以F項內(nèi)容符合上下文。故選F。
（2）考查上下文理解和邏輯推理。根據(jù)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，樹木在世界各地的覆蓋率的排名。故選G。
（3）考查上下文理解和邏輯推理。根據(jù)前后的內(nèi)容可知，此處在講述造成不同地區(qū)森林覆蓋率不同 的因素，所以A項內(nèi)容符合上下文。故選A。
（4）考查上下文理解和邏輯推理。根據(jù)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，問題在于政策制定者和規(guī)劃者遲遲不承 認這一點，并不支持這種努力。所以，此處要將現(xiàn)在的農(nóng)民具體是怎么做的。故選B。
（5）考查上下文理解和邏輯推理。根據(jù)前后的內(nèi)容可知，此處在講述農(nóng)民們砍伐木材做什么用途， 所以D項內(nèi)容符合上下文。故選D。