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
Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urb
Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urb
admin
2011-02-28
78
问题
Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for water will decrease substantially the amount of water available for diluting wastes. Rapidly expanding industries which involve more and more complex chemical processes will produce larger volumes of liquid .wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasing quantities of agricultural chemicals. From this, it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem.
There are two ways by which this pollution problem can be dwindled. The first relates to the treatment of wastes to decrease their pollution hazard. This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes, or effluents, tn permit the reuse of the water or minimize pollution upon final disposal.
A second approach is to develop an economic use for all or a part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement. Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Effluents from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable by products. Other industries are exploring potential economic uses for their waste products.
The reader can conclude that______.
选项
A、countries of the world will work together on pollution problems
B、some industries are now making economic use of liquid wastes
C、by-products from wastes lead to a more prosperous marketplace
D、science is making great progress in increasing water supplies
答案
B
解析
第三段最后两句均阐述某些正在从经济上利用废水。
转载请注明原文地址:https://kaotiyun.com/show/Mutd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Howlongisitsincethefirstnewspaperwasprinted?
FutureShock
Astimegoeson,howtodogoodcriticalthinkingisincreasinglymarginalizedorevenleftoutofthemoderneducationalproces
OvershadowedbyrowsoverNigeriaandLockerbie,theCommonwealth’sattemptstorefocusontradeandinvestment—themaintheme
OvershadowedbyrowsoverNigeriaandLockerbie,theCommonwealth’sattemptstorefocusontradeandinvestment—themaintheme
Geneticallyengineeredcropsaresafeforhumansandanimalstoeatandhavenotcausedincreasesincancer,obesity,gastrointe
U.S.healthofficialsareincreasingsurveillancemeasuresatdoctors’officesandinternationalborderstoguardagainstthes
Accordingtothepassage,whichofthefollowingnewspapershavethelargestcirculation?
WhendidBikobecomethehonorarypresidentoftheBlackPeople’sConvention?
随机试题
在活性硅测定试验中加入草酸的目的,是掩蔽水样中的磷酸盐和铁离子干扰。
对影像增强器电子透镜的解释,错误的是
保证,是指保证人和债权人约定,当债务人不履行债务时,保证人按照约定履行债务或者承担责任的行为。保证的特点有()。
1.背景某建设单位承接了一项大型冶炼工程建设项目,该项目工程量近6亿元人民币,工程内容包括PHC桩、土建基础、混凝土结构、钢结构及相关的安装,为大型综合性工业建筑群体工程。其中,主体结构为两个洁净室厂房,钢结构量约3万t。由于行业特点,业主要求施工单位必
某建设工程项目分包工程发生生产安全事故,负责向安全生产监督管理部门、建设行政主管部门或其他有关部门上报的是()。【2011年考试真题】
在关系模式R<U,F>中,如果X→Y,且存在X的一个真子集X’,有X’→Y’,则称Y对X的依赖为【】函数依赖。
下列关于栈的叙述中,正确的是
Thisbookisintendedtoprovidethestudentsofphysicalsciencewithhelpinmasteringelementaryphysics,chemistry,earthsc
Humanityuseslessthanhalfthewateravailableworldwide.Yet【S1】______ofshortagesanddroughts(干旱)arecausingfamineandd
A、Becauseshethoughttheapartmentwastoosmall.B、Becauseitwasthefirstapartmentshehadseen.C、Becausetherentwastoo
最新回复
(
0
)