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
Whether trying to live with the depressing spectacle of drought or battling rampaging floods or suffering with a debilitating di
Whether trying to live with the depressing spectacle of drought or battling rampaging floods or suffering with a debilitating di
admin
2010-06-30
72
问题
Whether trying to live with the depressing spectacle of drought or battling rampaging floods or suffering with a debilitating disease caused by contaminated drinking supplies, people in almost every corner of the world have had their problems with the vagaries of water. Although water covers much of our planet, more than 97 % is in the oceans. Another 2 % is unusable ice. More over, much of the remainder is polluted. So much for the supposed abundance ! Developed and developing countries alike are now talking about a crisis.
What of the future? Will water needs reach a peak? Unhappily, LIN experts expect demands to double in the next 25 years. 【61】
This will coincide with increasing population and industrialization and the attendant risk of factory and human waste further contaminating rivers, lakes and ground water.
So, is there any hope of a solution? The answer, fortunately, is that the problem is being tackled.
【62】
Specialists in many countries are developing methods to improve supply and conservation and protect quality, and a number of ambitious programs have been undertaken.
Good fore casting- including predictions of snow, rain, river levels and soil loss --can help scientists head off, or at least cope with floods. Canals can ease one of the major water-related problems: drought. With something like three quarters of the world’ s fresh water tied up as ice, plans to drag ice bergs to drought areas have been around for a long time; attempts to overcome the drawbacks are still being made. A great deal of energy would be needed to the ice and pump the water inland, and the ice might melt before reaching its destination. In addition, research into desalting seawater continues with new and improving desalting methods although no method can yet promise truly low-cost fresh water. Fossil water --underground water dating back to the ice age could be drilled for in’ some areas but supplies are non-renewable. Work continues in all these areas. It is obvious that a lot of time, money and research is going into finding solutions to some of the problems.
【63】
However, worldwide, the ugly fact remains that something like 250 million new cases of waterborne diseases are discovered every year and 25,000 people die from them every day.
Pollution continues to plague all of us. "Even as the rain falls", says Russell W. Peterson, former chair man of the US Council on Environmental Quality," it scours pollutants from the air. In fact, nearly all the pollutants the people of the world discharge into the air end up in our water systems." 【64】
Therefore, whether tainted by industrial waste, sewage or other pollution, unreliable water supplies frequently create breeding grounds for deadly water-borne diseases when safeguards and purification are inadequate.
Millions of people, therefore, continue to be affected by water-related problems and contrary to popular belief, future water supplies are not inexhaustible. So the situation is very serious, especially in view of the UN estimates of demand. 【65】
Although projects to provide ever increasing supplies of water indicate that a growing number of countries are aware of the present problems and of those to come, these more often than not are highly expensive and not very practical, and very time-consuming when time is commodity in short supply.
Therefore, while research in these areas is important, the eventual solution would definitely appear to be worldwide conservation and pollution control--in other words, a greater respect for our most valuable natural resource.
【61】
选项
答案
这是因为持续增长的人口和迅速发展的工业化恰好重合,再加上与之相伴随的工业和生活的废物又进一步加剧对河流、湖泊和地表水的污染的危险。
解析
转载请注明原文地址:https://kaotiyun.com/show/S3Jd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
ThepagesoftheHarvardBusinessReviewarenotusuallypopulatedbynovelists.ButJosephFinderisjustsuchararity.Recent
ThefollowingisaninterviewwithEmmaRichards,oneofBritain’smostsuccessfulsailorsandtheyoungestpersontocompletet
AmotherwrotetoanewspaperinquiringwhetherhersonshouldgoabroadtostudyasanundergraduateorheshouldgotoaChine
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
RecentsurveysshowthatJapaneseyouthhavebecomea"MeGeneration"thatrejectstraditionalvalues."Around1980many
RecentsurveysshowthatJapaneseyouthhavebecomea"MeGeneration"thatrejectstraditionalvalues."Around1980many
RecentsurveysshowthatJapaneseyouthhavebecomea"MeGeneration"thatrejectstraditionalvalues."Around1980many
RecentsurveysshowthatJapaneseyouthhavebecomea"MeGeneration"thatrejectstraditionalvalues."Around1980many
随机试题
决策主体的因素一般包括()
A.FT3B.TT3C.FT4D.TT4E.TSH原发性甲状腺功能减退症最早出现异常的是
对明渠恒定均匀流,在已知通过流量Q、渠道底坡i、边坡系数m及粗糙系数n的条件下,计算梯形断面渠道尺寸的补充条件及设问不能是:
关于合同形式的说法,正确的是()。
预算定额中的人工工日消耗量可采用( )来确定。
在Word文档中,要想产生段落标记,应该输入()。
下列收入中,应征增值税的是( )。
下列应税销售行为,一般纳税人可以选择简易计税方法计税的有()。
在“首届京剧旦角最佳演员”的评选中,梅兰芳、程砚秋、尚小云、()当选,被誉为京剧“四大名旦"。
《中华人民共和国行政复议法》规定,()可以作为第三人参加行政复议。
最新回复
(
0
)