首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Read the following passage. Choose from the sentences A—G the one which best fits each gap of 61— 65. There are two extra senten
Read the following passage. Choose from the sentences A—G the one which best fits each gap of 61— 65. There are two extra senten
admin
2018-10-19
40
问题
Read the following passage. Choose from the sentences A—G the one which best fits each gap of 61— 65. There are two extra sentences which you do not need to use.
All these activities may have damaging environmental impacts. For example, land clearing for agriculture is the largest single cause of deforestation: chemical fertilizers and pesticides may contaminate water supplies: more intensive farming and the abandonment of fallow periods tend to exacerbate soil erosion: and the spread of monoculture and use of high-yielding varieties of crops have been accompanied by the disappearance of old varieties of food plants which might have provided some insurance against pests or diseases in future.
【R1】______The United States, where the most careful measurements have been done, discovered in 1982 that about one-fifth of its farmland was losing topsoil at a rate likely to diminish the soil’s productivity. The country subsequently embarked upon a program to convert 11 percent of its cropped land to meadow or forest. Topsoil in India and China is vanishing much faster than in A-merica.
【R2】______In the rich countries, subsidies for growing crops and price supports for farm output drive up the price of land. The annual value of these subsidies is immense: about $250 billion, or more than all World Bank lending in the 1980s. To increase the output of crops per acre, a farmer’s easiest option is to use more of the most readily available inputs: fertilisers and pesticides. Fertiliser use doubled in Denmark in the period 1960—1985 and increased in the Netherlands by 150 percent. The quantity of pesticides applied has risen too: by 69 percent in 1975—1984 in Denmark, for example, with a rise of 115 percent in the frequency of application in the three years from 1981.
【R3】______The most dramatic example was that of New Zealand, which scrapped most farm support in 1984. A study of the environmental effects, conducted in 1993, found that the end of fertiliser subsidies had been followed by a fall in fertiliser use(a fall compounded by the decline in world commodity prices, which cut farm incomes). The removal of subsidies also stopped land-clearing and over-stocking, which in the past had been the principal causes of erosion. Farms began to diversify. The one kind of subsidy whose removal appeared to have been bad for the environment was the subsidy to manage soil erosion.
【R4】______Such countries also try and to introduce new payments to encourage farmers to treat their land in environmentally friendlier ways, or to leave it fallow. It may sound strange but such payments need to be higher than the existing incentives for farmers to grow food crops. Farmers , however, dislike being paid to do nothing. In several countries they have become interested in the possibility of using fuel produced from crop residues either as a replacement for petrol(as etha-nol)or as fuel for power stations(as biomass). Such fuels produce far less carbon dioxide than coal or oil, and absorb carbon dioxide as they grow.
【R5】______But they are rarely competitive with fossil fuels unless subsidized—and growing them does no less environmental harm than other crops.
Questions 61 to 65:
A. Soil erosion threatens the productivity of land in both rich and poor countries.
B. To reduce environmental damages, government have to adopt various methods.
C. They are therefore less likely to contribute to the greenhouse effect.
D. Government policies have frequently compounded the environmental damage that farming can cause.
E. In less enlightened countries, and in the European Union, the trend has been to reduce rather than eliminate subsidies.
F. In the late 1980s and early 1990s some efforts were made to reduce farm subsidies.
G. Although all of them can produce poisonous gas through burning.
【R2】
选项
答案
D
解析
本段主要介绍政府政策加重了由农业带来的环境污染。第一句是主题句,然后举了几个国家的例子,由于土地很贵,农民为了增加单位面积的产量而使用化肥。
转载请注明原文地址:https://kaotiyun.com/show/SeyK777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Themostcrucialway,however,ofimprovingthelabourcoststructureatSAH(SydneyAirportHotel)wastofindbetter,morepr
BushConcernedaboutRisingGasPricesPresidentBushsaysavarietyofglobalforcesaretoblameforcrudeoilpricestopp
BushConcernedaboutRisingGasPricesPresidentBushsaysavarietyofglobalforcesaretoblameforcrudeoilpricestopp
HighDropoutRateinUSManyyoungpeopleintheUnitedStatesneverfinishhighschool.Exactlyhowmanydropoutsisanothe
Geographicallyspeaking,whichofthefollowingtermscoversthelargestarea?
YourEnglishclasshasanewteacher,MissAmberStart,fromAmerica.Afterattendingherfirstclassthestudentshavedecided
(76)Wearetoldthatthemassmediaarethegreatestorgansforenlightenmentthattheworldhasyetseen;thatinBritain,for
Bandscomeandgo.Somebecomefamous.Othersdon’t.Someenjoygreatwealth.Othersmakenothing.Butwhy?Sometimestheyjust
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【21】ChristopherColumbus.Hethoughthehadre
—DoyouthinkIcouldborrowyourcartogogroceryshopping?Thesupermarketsoutsidethecityaresomuchcheaper.I’dalsob
随机试题
在社会保障中居于核心地位的是()。
A.特异性结合B.细胞膜葡萄糖转运体-1C.细胞膜Na+-K+ATP酶D.显像剂与血浆中转铁蛋白结合E.线粒体膜两侧电位差恶性淋巴瘤67Ga显像,与肿瘤组织浓聚相关因素是
用法律把环境影响评价从项目环境影响评价拓展到规划环境影响评价的时间是()年。
距离当地公安消防队较远、被列为全国重点文物保护单位的古建筑群的管理单位,应当建立单位(),承担本单位的火灾扑救工作。
已知(P/A,10%,4)=3.170,(F/A,10%,4)=4.641,则相应的偿债基金系数为()。
理念是指人们对主观世界或事物所确立的思想意识。()
中国近代史上最早建立的军事学堂是()
设A为n阶方阵,且A的各行元素之和为0,A*为A的伴随矩阵,A*≠O,则A*x=0基础解系的解向量的个数为____________.
设X1,X2分别为A的属于不同特征值λ1,λ2的特征向量.证明:X1+X2不是A的特征向量.
有以下程序intf(intn){if(n==1)return1;elsereturnf(n-1)+1;}main(){inti,j=0;for(i=1;i<5;i++)j+
最新回复
(
0
)