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
What is the first thing that people ought to do in face of pollution, according to the author?
What is the first thing that people ought to do in face of pollution, according to the author?
admin
2014-05-14
47
问题
What is the first thing that people ought to do in face of pollution, according to the author?
The first thing people see, in the morning, when they walk outside is the sky or the colored sun. Is this world giving us the privilege of seeing the natural colors of the sun through all the layers of pollution within the air? Not only are beautiful sights such as this hidden behind the pollution this world causes everyday, but an increase in diseases, infections and death occurs. What causes pollution? What can we do to prevent it, and get rid of it? Is it fair to the children of the future to have to suffer the consequences that pollution causes? Why not take care of the problem now? Factory and business owners have the ability to prevent air pollution. Air pollution is the presence in the atmosphere of harmful gases, liquids, or solids. Air pollution, known as smoke pollution for many years, resulted from coal combustion. smog has been a problem in coal-burning areas for several centuries. smog finally decreased when coal combustion was replaced by oil and gas combustion. Air pollution is caused by a number of different types of pollutants. The first type, particulate matter, consists of solid and liquid aerosols suspended in the atmosphere. These arise from the burning of coal and from industrial processes. Atmospheric particles can scatter and absorb stmlight which reduces visibility. Particles also reduce visibility by attenuating the light from objects and illuminating the air causing the contrast between the objects and their backgrounds to reduce. Not only does it effect visibility, but it hastens the erosion of building materials and the corrosion of metals, interferes with the human respiratory system, and brings toxic materials into the body. The small particles cause chronic bronchitis, bronchial asthma, emphysema and lung cancer. The second type is sulfur oxides which come from the burning of coal and industrial processes. Damage to materials, to vegetation, and to the human respiratory system are caused by the acid nature of oxides. small quantities of sulfur oxides can increase illness and mortality. The third type of pollutant is carbon monoxide. Carbon monoxide is a colorless, odorless, tasteless gas against which humans have no protection. Carbon monoxide comes from the exhaust of gasoline-powered vehicles and secondarily from industrial processes.
选项
A、Sulfur oxides.
B、Toxic materials.
C、Particulate matter.
D、Carbon monoxide.
答案
B
解析
如果仔细听短文中的陈述,第一类、第二类和第三类污染物时,就会发现选项B不属于里面的任何一类,而是第一类污染物所带来的有害物质。
转载请注明原文地址:https://kaotiyun.com/show/KITK777K
0
专业英语四级
相关试题推荐
InZurich,aleadingCantonintheSwissConfederation,ithasbeenproposedtoteachoneforeignlanguage—English—inprimarysc
"Youngpeopleoughtnottobeidle.Itisverybadforthem,"saidMargaretThatchermanyyearsago.Shewasright:therearefe
Lawyersarelessthan1%ofAmericanadults,(1)_____theyarewell-representedingovernment.Boththepresidentandthevice-p
Lawyersarelessthan1%ofAmericanadults,(1)_____theyarewell-representedingovernment.Boththepresidentandthevice-p
IntheUnitedStates,thefirstdaynursery,wasopenedin1854.Nurserieswereestablishedinvariousareasduringthe(1)_____
Manypeopleliketotravel.Theproblemisgettingyourpettothe(1)______.Inrecentyears,transportingpetsonflightshasg
Accordingtotheconversation,RuthcallsTimbecause
DuringMcDonald’searlyyearsFrenchfriesweremadefromscratcheveryday.RussetBurbankpotatoeswere(1)______,cutintosho
I’dratheryou______bytrainbecausetheweatherforecastsaidtherewouldbeheavysnowtomorrow.
Aboutthetimethatschoolsandothersquitereasonablybecameinterestedinseeingtoitthatallchildren,whatevertheirback
随机试题
cristaampullaris
下列哪项不属于淡漠型甲状腺功能亢进症的主要临床表现( )。
女,7岁。食冷饮时左后牙感到酸痛2周,无自发痛史,检查发现颊面深龋,龋蚀范围稍广,腐质软而湿润,易挖除,但敏感。测牙髓活力同正常牙,叩(-)治疗方案应考虑为
急性肾炎的中医病机主要是
关于热原的表述,不正确的是
历史书法家多雅人高士,故所作能风度潇洒,韵味醇古,于笔墨以外,则有一种静穆之气,幽雅之思,为常人凡夫所不及。此即将人格移入于作品之中,使之人格化,故能感人最深而为书法之上上乘也。根据这段话,作者想告诉我们()。
地球分为三层,其中不包括:
请用不超过200字的篇幅,概括出给定材料所反映的主要问题。要求:全面,有条理,有层次。从政策制定的角度,提出解决给定资料所反映问题的对策建议。要求:有针对性,有条理,切实可行。字数不超过350字。
巴兰钦
设X1,X2,…,Xn是来自总体X的简单随机样本,X的概率密度函数为f(x)=一∞<x<+∞,则λ的最大似然估计量=________.
最新回复
(
0
)