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
84
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?
Astimegoeson,howtodogoodcriticalthinkingisincreasinglymarginalizedorevenleftoutofthemoderneducationalproces
Geneticallyengineeredcropsaresafeforhumansandanimalstoeatandhavenotcausedincreasesincancer,obesity,gastrointe
U.S.healthofficialsareincreasingsurveillancemeasuresatdoctors’officesandinternationalborderstoguardagainstthes
U.S.healthofficialsareincreasingsurveillancemeasuresatdoctors’officesandinternationalborderstoguardagainstthes
U.S.healthofficialsareincreasingsurveillancemeasuresatdoctors’officesandinternationalborderstoguardagainstthes
WhendidBikobecomethehonorarypresidentoftheBlackPeople’sConvention?
随机试题
邓小平关于社会主义本质的论断中,处于基础地位的是
下焦病证多为肝肾阴伤,故可出现
哪项是心力衰竭的基本病因()(2006年)
抑制HIV病毒的药物是()。
设函数f(x)在(a,b)内可微,且f’(x)≠0,则f(x)在(a,b)内()。
应付票据是应付账款的书面证明。与银行借款相比,下面关于应付票据的利率、筹资成本和风险表述正确的是()。
下列属于土地增值税的纳税义务人的有()。
牛顿废寝忘食的故事伟大的科学家牛顿对自己的工作极端专心,常常废寝忘食。有一天,一个朋友等他吃饭,可是他在工作室专心工作,很久很久都不出来,那个朋友等饿了,就一个人先吃了。吃完后,他和牛顿开个玩笑,把自己吃剩下的肉骨头、鸡骨头都放到牛顿的饭盒里,然后走了。
______resultsin"Acidrain"?______maygiveoffmoreradioactivepollutionintotheairthananuclearplant?
EveryoneintheofficeknowsthatMelindatakesinfinitecareoverherwork.Theunderlinedpartmeans______.
最新回复
(
0
)