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
Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it h
Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it h
admin
2013-01-20
66
问题
Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the sole measure of progress without a proper appreciation of historical and cultural perspectives.
To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a predominantly rural society with a much lower population density than it is today. It had minimal effect on biodiversity, and any pollution it caused was typically localised. In terms of energy use and the nutrients(营养成分) captured in the product it was relatively inefficient.
Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialise and increase yields. Throughout this period food became cheaper, safer and more reliable. However, these changes have also led to habitat(栖息地) loss and to diminishing biodiversity.
What’s more demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050. Yet the growth of cities and industry is reducing the amount of water available for agriculture in many regions.
All this means that agriculture in the 21st century will have to be very different from how it was in the 20th. This will require radical thinking. For example, we need to move away from the idea that traditional practices are inevitably more sustainable than new ones. We also need to abandon the notion that agriculture can be "zero impact". The key will be to abandon the rather simple and static measures of sustainability, which centre on the need to maintain production without increasing damage.
Instead we need a more dynamic interpretation, one that looks at the pros and cons (正反两方面)of all the various ways land is used. There are many different ways to measure agricultural performance besides food yield: energy use, environmental (costs, water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon cost of transposing tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity.
What is crucial is recognising that sustainable agriculture is not just about sustainable food production.
What will agriculture be like in the 21st century?
选项
A、It will go through radical changes.
B、It will supply mort animal products.
C、It will abandon traditional farming practices.
D、It will cause zero damage to the environment.
答案
A
解析
本题问“21世纪农业可能全是怎样的”。第二段第一句提到“To start with,it is important to remember that the nature of agriculture has changed markedly throughout history,and will continue to do so.”即农业的本质在历史上历经了巨大的变迁,并将不断变更下去,故A“它会经历根本性的变化”正确。
转载请注明原文地址:https://kaotiyun.com/show/n02O777K
0
考博英语
相关试题推荐
Americanwomenexperienceagreat【1】oflifestyles.A"typical"Americanwomanmaybesingle.Shemayalsobedivorcedormarried
Americanwomenexperienceagreat【1】oflifestyles.A"typical"Americanwomanmaybesingle.Shemayalsobedivorcedormarried
TestshaveconfirmedthatfourpeopleinWisconsincontractedthemonkeypoxvirusaftercomingintoclosecontactwithpetprair
TestshaveconfirmedthatfourpeopleinWisconsincontractedthemonkeypoxvirusaftercomingintoclosecontactwithpetprair
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsurvivalintheopen.Theyhadneitherthepowerfult
Aslongasherparentscanremember,13-year-oldKatieHarthasbeentalkingaboutgoingtocollege.Hermother,Tally,afinanc
Theyignoredhim,despitehisrepeated_____thathewasnotonthesceneofmurderthatevening.
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
ThechancesofinfectionofBSEor"mad-cowdisease"maybeslight,butthatdoesnotstoppeople_____beefenmasse.
Thenaturalenvironmentstillmanagestofilluswithasenseofaweandamazement.Despitetheamountofscientificknowledgem
随机试题
在资产配置过程中,确定有效资产组合的边界的目的是找出最小方差组合。()
学生对“借喻”这一修辞手法不太了解,教师搜集课文中的例子来讲解,下列语句适合的是()。
2012年,我国电子信息产品进出口呈小幅增长态势,进出口总额11868亿美元,增长5.1%,增速比上年回落6.4个百分点,低于全国商品外贸总额增速1.1个百分点,占全国外贸总额的30.7%。其中,出口6980亿美元,增长5.6%,增速比上年回落6.3个百分
对于先泰儒家学者所概括出的五种人伦关系,董仲舒最为强调的三种是()。
对二叉排序树进行查找的方法是:用待查的值与根结点的值相比,若比根小,则继续在【】子树中找。
下列符号中能够作为C++标识符的是()。
目前,比较流行的UNIX系统属于______。
Doyougiveyourchildrenmoneywhentheyperformwellatschool?Accordingtoastudy,suchanactioncouldbe【C6】________t
ImproveYourPublicSpeakingSkills1.Practiceina【T1】environment【T1】______Receivefeedbackabouttheir【T2】【T2】______Practic
TipsforThoseWhoTravelAloneA)Whenitcomestotraveling,sometimestakingajourneyalonecanbegreat.Travelingalon
最新回复
(
0
)