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
2013-01-19
70
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 revolutioa 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 21 st 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 todo 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/xP2O777K
0
考博英语
相关试题推荐
ThemostfamouspainterinVictoria’shistoryisEmilyCarr.Whenshewasachild,shediscoveredthatwalkinginthewoods【1】mo
Therelationshipbetweenformaleducationandeconomicgrowthinpoorcountriesiswidelymisunderstoodbyeconomistsandpoliti
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionaryeffectonthelivesofthepeoplewhooperatethene
Parentshavealegal______toensurethattheirchildrenareprovidedwithefficienteducationsuitabletotheirage.
He______unwisely,buthewasatleasttryingtodosomethinghelpful.
Accordingtothelatestreport,consumerconfidence______abreathtaking15pointslastmonth,toitslowestlevelintenyears.
Itisadreamworld,wherechemistscanturnasow’searintoasilkpurse,wherebioengineerscanputalittlehitofasheepi
David____hiscompany’ssuccesstotheunityofallthestaffandtheirperseveringhardwork.
A、elsewhereB、whatC、whicheverD、whereD文中在此处要表达的是一种寓意,即从前谁都不曾去过的地方,与前文的局限性相呼应。因此D项的where引导名词性从句,表示一个地方,符合文意。本题答案为D。
Everybodywastestime.Insteadofdoinghishomework,theschoolboywatchestelevision.Insteadofwritingheressay,thestuden
随机试题
计算简答题:根据所给材料回答问题。(需计算后回答的问题,须列出算式;每个问题计算过程中的小数均保留实际位数,计算结果有小数的,小数保留2位。)某出版社拟出版一本由摄影家赵明撰写的随笔集《光影的记忆》。该书的整体设计方案包括:采用32开本,勒口平装
设函数f(x)在点x0处连续,则下列结论肯定正确的是().
白细胞显微镜计数描述正确的是
A、滑膜炎B、灶性淋巴结浸润C、灶性白细胞浸润D、类风湿结节E、血管炎类风湿关节炎关节外的主要病理基础是
关于口腔检查,以下不正确的是()
测定药材的总灰分时,温度应控制在
财务生存能力分析是通过编制财务计划现金流量表,结合(),考察项目资金平衡和余缺等财务状况,判断其财务可持续性。
阅读下面的古诗,回答问题。岭上逢久别者又别(唐)权德舆
国家垄断资本主义的含义是()。
和平共处五项原则中最重要的原则及精髓是
最新回复
(
0
)