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
Pollution control is management of waste materials in order to minimize the effects of pollutants on people and the environment.
Pollution control is management of waste materials in order to minimize the effects of pollutants on people and the environment.
admin
2010-01-10
48
问题
Pollution control is management of waste materials in order to minimize the effects of pollutants on people and the environment. The quality of human health and of the natural environment depends on adequate pollution control. In the United States much has been done to control the more noticeable pollutants since 1965: more subtle yet still hazardous pollutants, however, remain to be adequately controlled.
Four general approaches to pollution control are: the intermittent reduction of industrial activities during periods of high air-pollution conditions; wider dispersion of pollutants using such devices as taller smokestacks; reduction of pollutants in industrial emission; and change of an industrial process or activity in order to produce less pollution. Taller smokestacks may reduce the concentrations to which local people are exposed, but they are ineffective in reducing overall pollution.
Pollutants removed from waste flows to reduce emissions to air and water may be disposed of by burial or storage on land, practices that pose potential hazards. Recent legislation requiring extensive emissions reductions has resulted in large investments in pollution-treatment technologies.
The fourth approach — changing a manufacturing process or activity in order to produce less pollution — may involve either the production of fewer residuals, by means of an improved process, or the separation and reuse of materials from the waste stream. This method of pollution control is the most effective and, as the costs of pollution control and waste disposal increase, is considered one of the most efficient.
Pollution-treatment systems have been effective in reducing the massive quantities of water and air pollutants that have clogged and choked urban areas. Although the improvements have been significant, recent pollution-control legislation aims to go further in order to control the less visible but often hazardous chemical and gaseous pollutants that still contaminate many waterways and urban atmospheres.
The costs of pollution control — resulting from capital, maintenance, and labor costs, as well as from the cost of additional residuals disposal — generally go up rapidly as a greater percentage of residuals is removed from the waste stream. Damage from pollution, on the other hand, goes down as a greater amount of contaminant is removed. Theoretically, the level of treatment should correspond to a point at which total costs of treatment and of damage to the environment are minimized or the benefits of further treatment are proportionally much smaller than the increased cost. In reality, costs or damages resulting from pollution can rarely be assessed in terms of dollars.
The overall purpose of the passage is______.
选项
A、to discuss the ways of and problems in pollution control
B、to give suggestions about pollution control legislation
C、to compare and contrast the four approaches to pollution control
D、to describe what has been achieved in pollution control
答案
A
解析
这是道主旨题。主旨题一般需要反映整篇文章的中心意思,有时是对整篇文章的概括。这篇文章主要讲的是控制环境污染的四种方式以及出现的一些问题。容易混淆的是第三个答案:比较控制环境污染的四种方式。许多考生会选择这个选项,因为文中前半部分就是分析的四种方式,但是整篇文章不仅仅讲的是这四种方式,还有控制环境污染所碰到的一些问题,故不能选C,要选A。
转载请注明原文地址:https://jikaoti.com/ti/X5QYFFFM
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
TheEuropeanonlinefashionbusinessisfierce.Justaskbackersofone-timehighfliers.Likeboo.com,theurbansportswearret
Althoughthelifewasveryharsh,thedoctorremainedontheislandforthereasonofthepeople.
Hesaidtherewasagreatgapbetweentheviewsexpressedinthemediaandwhat______peoplewerethinking.
Norevolutionsintechnologyhaveasvisiblymarkedthehumanconditionasthoseintransport.Movinggoodsandpeople,theyhav
Byusingnewforeigntextbooks,wecouldnotonlylearntherightexpressionofbusinessideas,butalsowewillknowthelastes
OurproductsaredisplayedinStandB22,________youwillfindmeduringofficehours.
中国的对外开放是“引进来”与“走出去”相结合的对外开放。中国政府在鼓励外商来华投资的同时,支持并鼓励有实力的中国企业到海外投资。在中国政府的大力推进下,近年来,中国企业实施“走出去”战略实现了较大跨越。截至2006年底,中国企业在160多个国家和地区投资设
女士们、先生们:晚上好。我想首先扼要地说一下中国的现状。大家知道,中国实行改革开放已走过了25年。在短短的四分之一个世纪里,中国取得了前所未有的重大进步和发展。25年前,中国的GDP只有l,473亿美元,而去年已达到14,000
尊敬的来宾,女士们,先生们:早上好!我很高兴来参加《财富》全球论坛,也很荣幸在此与大家交流一下我的看法。27年前,“开放”对于中国还是一个很陌生的词汇。在27年问,国民生产总值增加了1,100%,平均增速达9.4%。开放给中国人民
A、10million.B、7million.C、5million.D、22million.C根据原文第一段第二、三句可知印度七年来有10million的移动电话使用者,而在中国,每个月就有该数目一半的人成为移动电话的新用户。经过简单计算可
随机试题
下面指标中,根据其计算方法,理论上所给出买、卖信号最可靠的是()
能治疗白癜风的药为
男性患者,56岁,反复咳嗽、咳脓痰、间断发热5年,糖尿病病史10年。胸部X线片提示右肺下厚壁空洞,内有液平,周围纤维组织增生。欲鉴别诊断慢性纤维空洞型肺结核与慢性肺脓肿,下列哪项检查最必要
2005年试题【试题要求】1.任务说明下图为某多层公共建筑的局部立面(见图2.3一19、图2.3一20),其外饰面为干挂30mm厚花岗石板,要求按提供的配件及材料绘制指定节点的构造详图(在图2.3一21~图2.3一23上作答)。2.构造要
我国发展社会主义科学和文化艺术事业的基本方针是()。
“一两遗传胜过一吨教育”是个体身心发展的()的观点。
骨骼对于()相当于()对于房屋
(2013下集管)在进行项目整体变更控制过程中,首先要受理变更申请,接下来______。
W:Howdoesyourdaughterlikehernewschool?M:______
InancientGreeceathleticfestivalswereveryimportantandhadstrongreligionsassociations.TheOlympianathleticfestivalh
最新回复
(
0
)