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
2010-01-07
26
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. Moreover, 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, UN experts expect demands to double in the next 25 years. 【B1】
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.
【B2】
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 forecasting--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 tike three quarters of the world’ s fresh water tied up as ice, plans to drag icebergs 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.
【B3】
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 chairman 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." 【B4】
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. 【B5】
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 controlin other words, a greater respect for our most valuable natural resource.
选项
答案
与此同时,人口和工业化在持续增长,且工业和生活废物进一步对河流、湖泊和地表水污染的危险也随之而来。
解析
转载请注明原文地址:https://kaotiyun.com/show/bgPd777K
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
ThehistoryofresponsestotheworkoftheartistSandroBotticelli(1444—1510)suggeststhatwidespreadappreciationbycritics
Whenitcomestotheslowingeconomy,EllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcutting,
Whenitcomestotheslowingeconomy,EllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcutting,
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond【31】______istos
Allthatfault-findingaboutloweringcholesterolandeatinglessfatmustfinallybepayingoff.Accordingtoastudypublished
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
Wherewastheletterprobablyplacedmanyyearsago?
Allinternationalchainschoolsteachmanydifferentlanguages.
Allinternationalchainschoolsteachmanydifferentlanguages.
【B1】ThefreeenterprisesystemhasproducedatechnologycapableofprovidingtheAmericanconsumerwiththelargestandmostva
随机试题
基金合同的当事人包括( )。
直接用于产品生产,并构成该产品实体的原材料费用应记入的会计科目是【】
正常成人腋测法体温应是
女,28岁。婚后4年未孕,月经周期4—5天/2~3个月,量偏少,身高156cm,体重75kg,面部可见痤疮,阴毛分布呈男性型。妇科检查:子宫未见异常,双侧卵巢稍大。基础体温单相。该患者最可能的诊断是
某施工工程人工费为80万元,材料费为140万元,施工机具使用费为40万元,企业管理费以人工费和机械费合计为计算基础,费率为18%,利润率以人工费为计算基础,费率为30%,规费30万元,综合计税系数为3.41%,则该工程的含税造价为()万元。
由于天气、灾害、政变等不可抗力的原因影响旅游计划的实施,导游有人员首先要游客表示歉意,这是对工作认真负责的表现。()
在[0,π]之间任取一数χ,则≤sinx≤1的概率为_______.
三个人讲一段话。1说发现问题主要靠同事、领导,2说人总是知道问题但是不愿意面对.3说优点比缺点多就行。请你谈谈对这三句话的理解,并且说说自己的不足。
等级规则
在国内,私有化的概念说起来好像就是把国有资产分掉,而实质上则是对私有财产所有权的保护问题。如果没有对这个权力执行保护的法律基础,国有资产能够被分掉,分得的财产也随时可以被没收。如果以上陈述为真,最有力地支持了以下哪项陈述?()淮州市的发展前景不
最新回复
(
0
)