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
A、It exists close to the surface of the Earth. B、It is a component of smog and a harmful substance. C、It is a kind of yellow gas
A、It exists close to the surface of the Earth. B、It is a component of smog and a harmful substance. C、It is a kind of yellow gas
admin
2010-04-30
8
问题
M: Ozone is an extremely active gas comprised of three atoms of oxygen. Ozone exists naturally in the Earth’s upper atmosphere, the stratosphere, where it shields the Earth from the sun’s ultraviolet rays. However, ozone found close to the Earth’s surface, called ground-level ozone, is a component of smog and a harmful substance.
W: What is the ground-level ozone? Where does it come from?
M: Ground-level ozone is a colorless gas that can be found in the air we breathe. It is formed through a complex chemical reaction between volatile organic compounds and nitrogen oxides in the presence of sunlight. It is hard to be watched by eyes.
W: Who is considered most at risk from exposure to ground-level ozone?
M: Children are the most at risk from exposure to ground-level ozone: Their respiratory systems are still developing and they breathe more air per pound of body weight than adults.
W: From what you’ve just said, can I infer that ground-level ozone is closely related to summer, the hot days?
M: Ground-level ozone is a summer time problem; children spend most of the summer outside playing at summer camps, playgrounds, and neighborhood parks and in backyards.
W: How do I know when ground-level ozone concentrations are high?
M: Ground-level ozone concentrations tend to be especially high during summer when the weather is hot and sunny.
W: Is there any organization providing relevant information?
M: The staff from the departments concerned has developed a procedure to inform the public about expected ground-level ozone readings. Each afternoon from May 1st through September 15th, the staff retrieve and review monitored ozone data and weather forecast information. Then they develop ground-level ozone forecasts for the following day.
选项
A、It exists close to the surface of the Earth.
B、It is a component of smog and a harmful substance.
C、It is a kind of yellow gas.
D、It is formed through a complex reaction.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/tXOK777K
0
大学英语六级
相关试题推荐
Thedecisiontomoveisalsoinfluencedby"personalfactors"ofthepromisingmigrant.Thesamepush-pullfactorsandobstacles
Forthispart,youareallowed30minutestowriteashortessayentitledFightingCorruption.Youshouldwriteatleast150wor
Spaceenthusiastslooktothedaywhenordinarypeople,aswellprofessionalastronautsandmembersofCongress,canleaveEarth
A、Itisanetworkforshoppingmalls,officesandhomes.B、Itrelievestheheavyburdenofteachersinschool.C、Itsimplifiest
A、Tovisitthecinemaandwriteacomposition.B、Toreadanovelandwriteasummary.C、Toreadthetextbookandmakeanexperim
A、Ahouse.B、Acar.C、Ahotel.D、Anartgallery.AWhatisthemangoingtoview?
SonjaLyubomirskyboughtthecarjustbecauseshewantedtoownaPrius.BeforeLyubomirskycarriedoutherownresearch,scien
TheauthorofthisarticlethinksthatthelateEmeryTobinisthemostoutstandingamongthenotablecitizensinKetchikan.At
In1942,Americans(36)______severalimportantvictoriesovertheJapanese.TheUnitedStatesnavy(37)______apowerfulJapane
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmaybeharmfultooneanother’shealth.Couplesin(36)______
随机试题
政党的首要任务是______。
陈旧性蛛网膜下腔出血的脑脊液常呈
建立变量X、Y间的直线回归方程,回归系数的绝对值|b|越大,说明()。
税款的退还和追征制度是税款征收制度的重要组成部分,下列表述正确的有()。
决定一个国家汇率制度的主要因素包括()。
薪酬水平一般的企业应注意()点处的薪酬水平。(2007年5月二级真题)(2005年5月三级真题)(2004年11月三级真题)
【2015辽宁特岗】提出学习“顿悟说”的学者是罗杰斯。()
有人说,民主就像一个旋转的陀螺,重要的是旋转的过程。离开了这个过程,民主的陀螺就会倒下。就民主决策而言,正确的决策结果自然会给人们带来希望和信心,而决策的过程,对人们凝聚信心的影响更大。这段文字中的比喻意在强调:
宋代最终完成了编敕的刑法化,使编敕成为一部新刑法的是()。
祖国统一是中国历史发展的主流和中华民族根本利益所在,体现在()
最新回复
(
0
)