2.Farmers,especially 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 tree cover on more than one billion hectares of farmland.That is almost half the farmland in the world.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 tree cover in South America.Next comes Africa south of the Sahara,followed by Southeast Asia.North Africa and West Asia have the least.
The study found that climate conditions alone could not explain the amount of tree cover in different areas.Nor could the size of nearby populations,meaning people and trees can live together.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,who heads the World Agroforestry Center,says farmers are acting on their own to protect and plant trees.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 also help prevent soil loss and protect water supplies.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?dú)猓﹐ut of the air and put it in the soil.Scientists at the Center say the use of fertilizer trees can re-duce the need for chemical nitrogen by up to three-fourths.Trees also capture carbon dioxide,a gas linked to climate change.
35.Through the study,the researchers found thatA.
A.there are more trees on farmlands than expected
B.fewer trees are being cut in developing countries
C.most farmers still don't realize the value of trees
D.trees play a key role in preventing climate change
36.Which of the following has the least tree cover?B
A.Southeast Asia      B.West Asia.
C.South America.D.Africa south of the Sahara.
37.In Dennis Garrity's opinion,D.
A.most farmers care about nothing but their own interests
B.there are usually few people living in areas with few trees
C.government plays a small role in tree planting and protection
D.government should support farmers in planting and protecting trees
38.The sixth paragraph mainly tells aboutC.
A.how farmers plant trees           B.what products trees can bring
C.the importance of trees to farmers   D.the environmental value of tree cover.

分析 本文是一篇新聞報(bào)道類(lèi)閱讀,文章主要介紹了現(xiàn)在世界上農(nóng)場(chǎng)樹(shù)林占有的面積還是很多的,農(nóng)民正意識(shí)到樹(shù)木對(duì)人對(duì)環(huán)境的重要性.作者認(rèn)為政府應(yīng)該支持農(nóng)民種樹(shù)和保護(hù)樹(shù).

解答 35-38 ABDC
35.A細(xì)節(jié)理解題.從第二段的句子:Earlier estimates were much lower but incomplete.The authors of the new study say it may still underestimate the true extent worldwide.可知早先的估計(jì)樹(shù)林面積是低的,不完整的,也就是現(xiàn)在的農(nóng)場(chǎng)的樹(shù)林比預(yù)料的要多.故選A.
36.B細(xì)節(jié)判斷題.題目問(wèn):下面的哪個(gè)地方樹(shù)木面積最少?可以根據(jù)這幾個(gè)地方定位到第三段:The study found the most tree cover in South America.Next comes Africa south of the Sahara,followed by Southeast Asia.North Africa and West Asia have the least.可知West Asia是最少的.故選B.
37.D細(xì)節(jié)理解題.題目問(wèn):Dennis Garrity是怎么認(rèn)為的,根據(jù)Dennis Garrity定位到第五段:Dennis Garrity,….says farmers are acting on their own to protect and plant trees.The problem,he says,is that policy makers and planners have been slow to recognize this and to support such efforts.說(shuō)明政府應(yīng)該支持農(nóng)民種樹(shù),保護(hù)樹(shù),故選D.
38.C段落大意題:題目問(wèn):第六段主要講了什么?重點(diǎn)放在第六段,根據(jù)文章第六段的內(nèi)容,可知講的是樹(shù)木對(duì)農(nóng)民的重要性.故選C.

點(diǎn)評(píng) 點(diǎn)評(píng):閱讀這類(lèi)文章時(shí),也應(yīng)該在整體把握文章結(jié)構(gòu)的前提下,主要注意細(xì)節(jié)信息.細(xì)節(jié)題題干都是相應(yīng)原文的變形(如同義改寫(xiě)、詞性轉(zhuǎn)換等),因此要找到答案一定要找到題干在原文中的出處,再把原文和選項(xiàng)相比較.做題時(shí),根據(jù)所提問(wèn)題用尋讀、跳讀的方法可達(dá)到事半功倍的效果.

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●Travel in groups:Find someone who is interested in visiting the same places.By traveling with others you can share costs and experiences.
●Work as you go:Need more money to support your trip?Look for work in the places you visit.
●Go off the beaten path:Tourist sites may be expensive.You may want to rethink your trip and go to a less-known area.Smaller towns can have many interesting activities and sights.
●Pack necessary things:The most important things to take are not always clothes.
Remember medicine in case you get sick,and snacks in case you cannot find a cheap restaurant.
●Use the Internet:The net can help to save money.Some useful websites include www.travelcity.corn,www.bargainslowestfare.corn and www.economictravelcity.com.
By planning sensibly,even students can enjoy the travel.Your travel experiences will be remembered for a lifetime.

56.This passage is aboutA.
A.how to plan your travel                   B.how to get life experiences
C.how to make your travel interesting       D.how to travel with enough money
57.Before your trip,the most important thing you should do isC.
A.to make a plan of the route               B.to buy tickets in advance
C.to save money before your trip            D.to get information from the Internet
58.The writer advises youB.
A.to share costs with friends                B.not to go to well-known places
C.not to visit dangerous places              D.to buy anything you want to buy.

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