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
Desertification(沙漠化)in the dry United States is very serious. Groundwater supplies beneath vast stretches of land are dropping r
Desertification(沙漠化)in the dry United States is very serious. Groundwater supplies beneath vast stretches of land are dropping r
admin
2014-09-30
47
问题
Desertification(沙漠化)in the dry United States is very serious. Groundwater supplies beneath vast stretches of land are dropping rapidly. Many river systems have dried up. Hundreds of thousands of acres of previously irrigated cropland have been abandoned to wind or weeds. Several million acres of natural grassland are eroded at unnaturally high rates as a result of cultivation or overgrazing(过度放牧). All told, about 225 million acres of land are under severe desertification.
Federal subsidies(补贴)encourage the exploitation of dry land resources. Low-interest loans for irrigation and other water delivery systems encourage farmers and industry to mine groundwater. Federal disaster relief and commodity program encourage dry-land farmers to plow up natural grassland to plant crops such as wheat, especially, cotton. Federal grazing fees that are well below the free market price encourage over-grazing of the commons. The market, too, provides powerful incentives(激励)to exploit dry land resources beyond their carrying capacity.
The incentives to exploit dry land resources are greater than ever. The government is now offering huge new subsidies to produce synthetic fuel from coal oil as well as alcohol fuel from crops. Moreover, commodity prices are on the rise; and they will provide farmers and agricultural businesses with powerful incentives to overexploit arid land resources. The existing federal government cost-share programs designed to help finance the conservation as soil, water, and vegetation are pale in comparison to such incentives.
In the final analysis, when viewed in the national perspective, the effects on agriculture are the most troublesome aspect of desertification in the US. For it comes at a time when we are losing over a million acres of rain-watered crop and grass land per year to higher uses—shopping centers, industrial parks, housing development, and waste dump—regardless of the economic need of the US to export agricultural products or of the world’s need for US food and fiber. Today the dry West accounts for 20 percent of the nation’s total agricultural output. If the US is, as it appears, well in its way toward overdrawing the dry land resources, then the policy choice is simply to pay now for the appropriate remedies or pay for later when productive benefits from arid land resources have been both realized and largely terminated.
The higher uses of rain-watered crop and grass land are criticized because______.
选项
A、America and the world need the land for agricultural production
B、industrial parks and waste dumps seriously pollute the environment
C、Americans need many shopping centers and apartments
D、they bring about a large amount of waste of resources
答案
A
解析
事实细节题。原文在提到higher uses之后解释了原因,对这些土地的“更高效利用”全然不顾美国出口农产品的经济需要和世界对美国食品和织物的需求。由此反过来可推知,世界和美国都需要那些土地用作农业生产,故A)为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/ojv7777K
0
大学英语四级
相关试题推荐
Notlongago,manypeoplebelievedthatbabiesonlywantedfoodandtobekeptwarmanddry.Somepeople(1)______babieswerenot
Notlongago,manypeoplebelievedthatbabiesonlywantedfoodandtobekeptwarmanddry.Somepeople(1)______babieswerenot
A、Byneitherhuntingnordestroyingitshome.B、ByusingDDT.C、Byintroducingitfromothercountries.D、Bymakingthenatural
AUNreportsaysthatoverhalftheworld’speoplenowliveincities.A(1)______ago,lessthanfivepercentofallpeoplelived
A、Improvingclimbingskill.B、Enhancingmentalcontrol.C、Practicingoverallability.D、Developinghandstrength.C
Memoryisourmostimportantpossession.Withoutmemory,youwouldn’tknowwhoyouare.Youcouldn’tthinkaboutthepastorpla
Memoryisourmostimportantpossession.Withoutmemory,youwouldn’tknowwhoyouare.Youcouldn’tthinkaboutthepastorpla
Memoryisourmostimportantpossession.Withoutmemory,youwouldn’tknowwhoyouare.Youcouldn’tthinkaboutthepastorpla
A、Crimescommittedbyyoungpeople.B、Crimescommittedbyneedypeople.C、Influenceonyoungpeople.D、Stealingandviolence.A信
A、Hethinkitserious.B、Heiscomplainingaboutit.C、Heisalreadyusedtoit.D、Heisnothappywithit.C
随机试题
“十个明确”和“十四个坚持”体现了习近平新时代中国特色社会主义思想()
先秦诸子散文中文学性最强的是()
三阶行列式的值是()
病原携带状态不见于
根据《物权法》的规定,下列关于建筑物区分所有权的表述中正确的是()。
如何进行促进迁移的教学?
有人认为,我国城市人口众多,城市房价高居不下,居民住房问题严重。特别是近年来,随着城市化进程的加快,大量的农村人口转化为城市人口,这给城市的居住问题形成了新的压力,因此,首要的问题是考虑如何更多地增加商品房的数量,以满足新增人口的住房需求,而不是调控房价。
作业从提交到后备状态的变化由(18)。作业从提交到运行状态的转换由(19)。
下面的语句中错误的是
Itwasnottheoriginalityoftheideathatmadethesesatirespopular.Itwasthemannerofexpression,thesatiricmethod,tha
最新回复
(
0
)