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 in the arid United Statse is flagrant. Groundwater supplies beneath vast stretches of land are dropping precipit
Desertification in the arid United Statse is flagrant. Groundwater supplies beneath vast stretches of land are dropping precipit
admin
2011-04-26
67
问题
Desertification in the arid United Statse is flagrant. Groundwater supplies beneath vast stretches of land are dropping precipitously. Whole river systems have dried up. Others are chocked with sediment washed from denuded land. 21.
Hundreds of thousands of acres of previously irrigated cropland have been abandoned to wind or weeds. Several million acres of natural grassland are eroding at unnaturally high rates as a result of cultivation or overgrazing. All told, about 225 million acres of land are undergoing severe desertification.
22.
Federal subsidies encourage the exploitation of arid land resources. Low-interest loans for irrigation and other water delivery systems encourage farmers, industry, and municipalities to mine groundwater. Federal disaster relief and commodity programs encourage arid-land farmers to plow up natural grassland to plant crops such as wheat and, especially cotton. Federal grazing fees that are well below the free market price encourage overgrazing of the commons.
The market, too, provides powerful incentives to exploit arid land resources beyond their carrying capacity. 23.
When commodity prices are high relative to the farmer’s or rancher’s operating costs, the return on a production-enhancing investment is invaribly greater than the return on a conservation investment. And when commodity prices are relatively low, arid land ranchers and farmers often have to use all their available financial resources to stay solvent.
24.
If the United States is, as it appears, well on its way toward overdrawing the arid land resources, then the policy choice is simply to pay now for the appropriate remedies or pay far more later, when productive benefits from arid land resources have been both realized and largely terminated.
选项
答案
如果商品价格高于农场主或牧场主的经营成本,那么旨在增加产出的投资的回报永远大于自然资源管理投资的回报。如果商品价格比较低,干旱地区的牧场主和农场主则往往必须耗尽所有的财力,以免负债。
解析
转载请注明原文地址:https://kaotiyun.com/show/TE6O777K
0
考博英语
相关试题推荐
Readtheinformationaboutthecommunicationofinformationinbusiness.ChoosethecorrectwordtofilleachgapfromA,BorC
Readthenewspaperarticlebelowaboutapartnershipbetweenindustryandschools.Aresentences16-22belowthearticle"Ri
AimsofAssetManagementAimofassetmanagementistoachievegreatesteffectivenessandprofitabilityfromproductionand
Whenthenewassemblylineiscomplete,thefactorywillturn______onethousandcarsperday.
城市一直在破坏它们的周围环境,并常常为之付出代价。科学家发现,一座老城在泥土下掩埋了千百年就是因为砍树过多而被洪水淹没的。此外,城市会给市民带来许多问题。据估计,到2050年时,城镇居民的数量将在人类历史上第一次超过农村人数。随后30年内,城市居民人数将达
DearSirs,IamwritingtoyourofficetoattempttodeterminewhyIhaveencouragedsomanyobstaclestoreceivingmyproper
WearesorrytosaythatMaryisnottheverypersonwhocanbe______witheithermoneyorsecretinformation.
MuchoftheAmericananxietyaboutoldageisaflightfromtherealityofdeath.OneofthestrikingqualitiesoftheAmerican
Indecidingtoundertakedangerouspursuits,people(usuallystrive)fortheirmaximumpersonalabilityrating,(when)they(are
Inamaterialisticand______societypeople’sinterestseemstobefocusedsolelyonmonetarypursuit.
随机试题
按照审判监督程序再审的案件,只能是()
我国农业合作化的方针是()
雌激素和孕激素作用的相同点是
两步滴定法测定阿司匹林片剂含量时,1mol氢氧化钠相当阿司匹林的摩尔数是
每股盈余最大化作为财务管理目标,其优点是()。
中国特色社会主义法治道路的核心要义包括()。
中国传统的饮料酒是(),位居世界六大蒸馏名酒。
毛泽东同志总结中国近代历次运动失败的教训时,曾说:“没有农民办不成大事,光有农民办不好大事。”下列事件属于“光有农民办不好大事”的是()。
汉朝专门制定了(),规定了对地方郡国守相和县令的考核。
Doanimalshavefights?Thisishowthequestionisusuallyput.Itseemsauseful,ground-clearingwaytostart.【61】Actually,
最新回复
(
0
)