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
68
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://www.kaotiyun.com/show/OITK777K
0
专业英语四级
相关试题推荐
Howdoesliterarystyleevolve?Surprisingly,(1)_____lieinwordswithseeminglylittlemeaning,suchas"to"and"that".B
Lawyersarelessthan1%ofAmericanadults,(1)_____theyarewell-representedingovernment.Boththepresidentandthevice-p
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggle(1)_____survivalintheopen.Theyhadneitherthepowerf
IntheUnitedStates,thefirstdaynursery,wasopenedin1854.Nurserieswereestablishedinvariousareasduringthe(1)_____
Manypeopleliketotravel.Theproblemisgettingyourpettothe(1)______.Inrecentyears,transportingpetsonflightshasg
DuringMcDonald’searlyyearsFrenchfriesweremadefromscratcheveryday.RussetBurbankpotatoeswere(1)______,cutintosho
DuringMcDonald’searlyyearsFrenchfriesweremadefromscratcheveryday.RussetBurbankpotatoeswere(1)______,cutintosho
Fortypeoplewerekilledina______ontherailwayyesterday.
______hadthetrainarrivedatthestationthanthepassengersrushedintothecarriages.
随机试题
下列哪种疾病可在胸骨左缘第3~4肋间触及收缩期震颤
勘测定界工作除具有一般地籍管理工作的特点外,根据其工作内容、工作性质还具有()特点。
在有冻胀环境的地区,建筑物地面或防潮层以下,不应采用的砌体材料是()。
设A是3阶实对称矩阵,P是3阶可逆矩阵,B=P-1AP,已知α是A的属于特征值λ的特征向量,则B的属于特征值λ的特征向量是:
《税收征收管理法》及其《实施细则》规定,从事生产经营的纳税人可以实行简易申报、简并征期等纳税申报方式。()
某企业2010年1月利润总额100万元,确认了所得税费用25万元,则在表结法下本年利润账户的月末余额为()万元。
所谓自然垄断是指()。
中国象棋是一种古老的智力游戏,是中国人智慧的体现。以下说法符合史实的是()。
在教师不加讲述的情况下,学生依靠自己的力量去获得新知识,寻求解决问题方法的一种学习方式是()
Accordingtothelatestnews,______(篮球比赛不得不推迟)untilnextweek.
最新回复
(
0
)