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
Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famin
Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famin
admin
2014-02-22
100
问题
Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world’s population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis.
But that doesn’t have to be the outcome. Water shortages do not have to trouble the world - if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want.
Instead, for all used except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs.
Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland.
No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water use. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.
The author says that in some hot and dry areas it is advisable to______.
选项
A、build big lakes to store water
B、construct big pumping stations
C、build small and cheap irrigation systems
D、channel water from nearby rivers to cropland
答案
C
解析
细节题。根据第四段第二句话“often the cheapest way to provide irrigation waterin the dry tropics is through small-scale projects,such as gathering rainfall in depressions andpumping it to nearby cropland”可知,作者认为在干旱地区,应通过小规模项目来提供灌溉水,如把凹地处聚集的雨水引用到附近的庄稼地。因此,正确答案是C选项。
转载请注明原文地址:https://kaotiyun.com/show/hJQO777K
0
考博英语
相关试题推荐
Wemusttrytouseourintellect______.
Wehaveatpresentnotany______ofthefurnitureasyourequired.
ThebearisaclassicandenduringAmericansymbolforthebenevolentwild.Wetendtothinkwellofbears,viewingthemaslarg
Anofficeisthe"brain"ofabusiness.Inanoffice,figures,listsandinformationarecompiledwhichtellthemanagersorhe
Inthissection,youarerequiredtowritea300-wordessayonthetopic"ArtorScience?"Youcanwriteaccordingtotheoutlin
Hypertensionplacesstressonanumberoforgans(calledtargetorgans,includingthekidney,eyes,andheart,causingthemto___
AnOhioStateUniversitystudyhaslinkedbehaviorinyoungchildren【1】thetypeofjobtheirmotherhas.Motherswithcomplexoc
Foryearspediatriciansdidn’tworrymuchabouttreatinghypertensionintheirpatients.Afterall,kidsgrowsofast,it’shard
Inspiteof"endlesstalkofdifference",Americansocietyisanamazingmachineforhomogenizingpeople.Thereis"thedemocrat
(中国矿业大学2010年试题)Morethan600milliongirlsliveinpovertyinthedevelopingworld.Manyofthemare【1】inschoolandareno
随机试题
对于理想气体系统,在下列过程中,系统所吸收的热量、热力学能的增量和对外做的功三者均为负值的是()
属于牙源性囊肿的是
A.姜半夏B.法半夏C.清半夏D.生半夏E.炒半夏小陷胸汤在调配时,半夏应给付的是
如果天龙食品厂于1999年9月12日向新桥区人民法院提起行政诉讼,那么:①人民法院是否应受理本案?②如果受理,法院是否可以对两个诉讼请求一并审理?为什么?③如果市法院于2000年5月5日做出终审判决维持了新桥区工商局的处理决定,天龙
会计工作交接完毕后,交接双方和监交人要在移交清册上签名盖章,移交清册填制一式两份,交接双方各持一份。()
解释测验结果的参照指标是()
中低端手机的巨大出货量推动了国产手机的繁荣。但低端意味着低利润,国产手机仍____________于“来料加工,仿制生产”的流水线生产经营理念,在产品创新方面缺乏核心竞争力。目前,大多数国产手机没有实质的功能和核心创新,很难获得强大的品牌影响力,最终还是只
设向量组α,β,γ线性无关,而向量组aα一β,bβ一γ,cγ—α线性相关,则().
现有以下程序:PrivateSubCommandlClick()cl=0c2=0Fori=lTo100IfiMod3=0Thencl=el+1ElseIfiMo
WorkshoptoFocusonGrantProcessLauraChinwillpresentaworkshopThursdayshowingnonprofitgroupshowtoapplyforNeighbo
最新回复
(
0
)