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
32
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、harmful solids
B、harmful gases
C、harmful liquids
D、harmful chemicals
答案
D
解析
根据短文里的界定:空气污染就是:Air pollution is the presence in the atmosphere of harmful gases, liquids,or solids.
转载请注明原文地址:https://kaotiyun.com/show/OITK777K
0
专业英语四级
相关试题推荐
InZurich,aleadingCantonintheSwissConfederation,ithasbeenproposedtoteachoneforeignlanguage—English—inprimarysc
InZurich,aleadingCantonintheSwissConfederation,ithasbeenproposedtoteachoneforeignlanguage—English—inprimarysc
"Youngpeopleoughtnottobeidle.Itisverybadforthem,"saidMargaretThatchermanyyearsago.Shewasright:therearefe
Thedifferencebetweenaliquidandagasisobvious(1)_____theconditionsoftemperatureandpressurecommonlyfound(2)_____o
Lawyersarelessthan1%ofAmericanadults,(1)_____theyarewell-representedingovernment.Boththepresidentandthevice-p
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggle(1)_____survivalintheopen.Theyhadneitherthepowerf
IntheUnitedStates,thefirstdaynursery,wasopenedin1854.Nurserieswereestablishedinvariousareasduringthe(1)_____
Blindpeopleusuallypossessoneadvantageoverotherpeoplewhocansee:theirsenseofhearingisfarmoreacute.Soundswhich
______thereislittlewecandotochangethereality,wecannotbetotallyatthemercyoftheharshenvironment.
随机试题
发动机传统点火系低压断路,原因是_______。
判断“雇员”窗体中“城市”控件的值为“北京”的宏条件表达式为()
下述哪一种情况可不拍摄颅脑CT的骨窗
下列不属于胆色素的是
常用的口腔科器械消毒方法除了()
A公司2013年度发生了4000万元的广告费用,在发生时已计入当期损益,税法规定广告费支出不超过当年销售收入15%的部分,准予扣除;超过部分允许在以后年度税前扣除。2013年度A公司实现销售收入20000万元,会计利润为1000万元。A公司所得税税
心理社会治疗模式的理论假设核心包括()。
在操作系统中,对信号量S的P原语操作定义中,使进程进入相应等待队列等待的条件是(41)。
Stupendouspriceswerepaidinahistoricsaleof19th-and20th-centuryavant-gardepaintingscollectedoveralifetimebyJohn
Believeitornot,bluejeanshavebeenaroundforover130years.LeviStrausscreatedthefirstbluejeansas【B1】______forgol
最新回复
(
0
)