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
考研
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
2014-11-24
79
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 localized. 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 specialize 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 of transporting 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 recognizing that sustainable agriculture is not just about sustainable food production.
What is the author’s purpose in writing this passage?
选项
A、To remind people of the need of sustainable development.
B、To suggest ways of ensuring sustainable food production.
C、To advance new criteria for measuring farming progress.
D、To urge people to rethink what sustainable agriculture is.
答案
D
解析
主旨题。文章首先提到,在农业领域,可持续发展是衡量进步的唯一标准,人们忽略了从历史文化的角度去合理评价它;接下来三段具体分析了人们是如何忽略的;第五段至末段提出21世纪的农业将与以前的截然不同,要求人们改变原有的农业方面的可持续发展思想。由此可知,作者主要是为了让人们重新思考什么是可持续发展的农业,故D项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/GrK4777K
0
考研英语一
相关试题推荐
Withthepossibleexceptionofequalrights,perhapsthemost【C1】______issueacrosstheUnitedStatestodayisthedeathpenalty
Withthepossibleexceptionofequalrights,perhapsthemost【C1】______issueacrosstheUnitedStatestodayisthedeathpenalty
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【C1】______cametothiscountry,theybrough
WorkisaveryimportantpartoflifeintheUnitedStates.WhentheearlyProtestant【C1】______cametothiscountry,theybrough
Jackwishesthathe______businessinsteadofhistorywhenhewasinuniversity.
TheGovernmentsAggressiveDealingswithU.S.AutomakersIntheory,agovernmentbailoutshouldprovideashort-terminfusio
Smoking,whichmaybeapleasureforsomepeople,isaserioussourceofdiscomforttotheirfellows.(1)_____,medicalauthorit
随机试题
变压器各主要参数是什么?
50kg体重的正常人的体液与血量分别为()
“系统的功能不是各个要素简单的叠加,而是大于各个个体的功效之和”描述的是系统的
A.手之阳经与手之阴经B.手之阳经与足之阳经C.手之阴经与足之阴经D.足之阳经与足之阴经E.手之阳经与足之阴经
有内在拟交感活性的B受体阻滞剂是
冰箱:肉类:蔬菜
开头部分加点的“它”所指代的是哪一项:“强子也有结构”,强子结构是由:
分组交换可以采用虚电路方式或(26)方式实现。虚电路方式在通信前需建立一条虚电路,其路径由(27)决定。每条虚电路都有虚电路号码,该号码(28)。虚电路建立后,各数据分组(29)到达目的地,然后(30)。
“先工作后判断”的循环程序结构中,循环体执行的次数最少是( )次。
在考生文件夹下,打开文档word1.docx,按照要求完成下列操作并以该文件名(word1.docx)保存文档。【文档开始】赵州桥在河北省赵县有一座世界闻名的石拱桥,叫赵州桥,又叫安济桥。它是隋朝的石匠李春设计并参加建造的,到现在已经有1300多年了
最新回复
(
0
)