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
81
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
Therelationshipbetweenformaleducationandeconomicgrowthinpoorcountriesiswidelymisunderstoodbyeconomistsandpoliti
TheUnitedNationsConferenceonDrugAbuse,whichtookplaceearlierthisyearinVienna,wasavery______meeting.
ThedoctorassuredSusanthatthepainwould______onehouraftershetookthemedicine.
Windproducesfromtheunevenheatingoftheatmosphereandirregularitiesintheearth’ssurface.Theairmovementbetweenthes
UndergroundRailroadinU.S.historywasalooselyorganizedsystemforhelpingfugitiveslavesescapetoCanadaortoareasof
Iwenttherein1984,andthatwastheonlyoccasionwhenI______thejourneyinexactlytwodays.
PresidentBush’svisitwasplannedto______30thanniversaryofPresidentNixon’svisittoChina.
Recentlyscientistshavebeen【1】andperfectingothersourcesofenergy:nuclearoratomicpower,solar(sun)power,andsyntheti
Recentlyscientistshavebeen【1】andperfectingothersourcesofenergy:nuclearoratomicpower,solar(sun)power,andsyntheti
AbudgetapprovedbytheEuropeanParliamentfortheEuropeanEconomicCommunitywasdeclaredadoptedTuesdaydespiteopposition
随机试题
证券公司从事证券投资顾问业务,应当遵循的基本原则是()。
髋骨是由(1)、(2)和(3)组成,三块骨汇合于(4)。
A.最低起付标准付费方式B.按比例分担付费方式C.按服务项目付费D.按病种付费E.总额预算方式由保险机构或政府与医疗服务提供方协商确定其年度总预算,实行费用封顶的方式是
医疗机构工作人员上岗工作,必须佩戴
对已经评定星级的饭店,实行复检制度,至少()复核一次。
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是:
中国古代历时最长的选官制度是()。
定义:①计划经济指国家在生产、资源分配以及产品消费各方面,都是由政府或财团事先进行计划。②自由市场指金钱、货物的流动完全是根据所有者个人自我意愿而进行的。③宏观调控是政府实施的政策措施以调节市场经济的运行。典型例证:(1)甲国法律规定,政府不得以
战国时期李悝作《法经》六篇,其内容属于诉讼法制度的篇章是()
已知随机变量X的概率分布为且P{X≥2}=,求未知参数θ及X的分布函数F(x).
最新回复
(
0
)