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
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do
admin
2009-01-05
64
问题
In general terms, the greenhouse effect, which has been studied with wary and keen interest for as long as a century, has to do with a gradual warming of the earth’s atmosphere. The warming is caused by an increase in the amount of carbon dioxide in the air around us; the CO2 holds heat from the sun instead of letting it be radiated back into space. The more of it in the atmosphere, the more difficult it is for the heat to escape.
CO2 in huge amounts is constantly being released into the atmosphere by the burning of fossil fuels for energy, especially coal. In the last 25 years the concentration of CO2 has risen from about 315 parts per million to 340. Not much, you might say if you are used to dealing with such delicate chemical relationships as the right blend of vermouth and gin. But this is a significant rise, and some conservative experts believe that by the third quarter of the next century, say, 2065, the concentration will have doubled. Others say the doubling will come sooner, in less than 50 years; all agree the CO2 content will keep going up.
The climatic effects of that kind of change are potentially tremendous. Temperatures would rise everywhere. According to the EPA (Environmental Protection Agency) projections, the global average temperature could go up about 3.6o Fahrenheit by 2040, and as much as 9oF by the year 2100, giving the New York of that sultry time a climate, in the words of an EPA spokesman, "like Daytona Beach, Florida. "Farming conditions in some chilly places that now have a very short growing season would be better, and some desert regions would get plentiful rainfall. But many areas now fruitful would be hurt. Our own Midwest would probably suffer more frequent and punishing drought, and land now dependent on irrigation would lose its sources of water. The temperature increases would cause largescale melting of ice near the poles and a rise in the sea level of about two feet in the 100 years-just for openers-with the tides of the future quite possibly necessitating "a gradual retreat to higher ground. "Noah, can you spare a line?
After reading the passage, we may conclude_______.
选项
A、the author is worried about the greenhouse effect
B、the author asks all of us to reduce the use of coal
C、the greenhouse effect is welcome as it is a mixed blessing
D、the greenhouse effect has affected our life now
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/UYBK777K
0
专业英语四级
相关试题推荐
NotwomanheldapresidentialcabinetpositionintheUnitedStatesuntil1933,whenFrancesPerkinsbecamesecretaryoflabor.
Roadrage,officerage,andevenrelationshipragearefamiliartous.Butnowidlenessragehasemerged.FrequentlyIhearpeo
Roadrage,officerage,andevenrelationshipragearefamiliartous.Butnowidlenessragehasemerged.FrequentlyIhearpeo
Managementjargoncanalienatestaffandleavebosseslookinguntrustworthyandweak,accordingtoasurveypublishedonMonday
ApprenticeshipshavelongbeenpopularinEurope,butworkforce-orientedhighschooltrainingisnearlyascommonin【M1】______U
AnoldChinesesayinggoesthat"Hethattravelsfarknowsmuch."Itimpliesthatpersonalexperiencecountsmuch.Incontrastt
AnyonebelievingtheglobaleconomiccrisistobeovershouldhavetakenalookaroundEuropethisweek.Desperatetorevivehis
PASSAGETHREEWhatisthepassagemainlyabout?
PassageThreeWhatisthispassagemainlyabout?
Whatdoesthepassagemainlydiscuss?
随机试题
A.碳源B.氮源C.两者均有D.两者均无合成菌体的糖类、脂类成分所必需()
A、乳汁管B、油室C、油管D、油细胞E、树脂道木香的显微特征可见
初始地籍调查时,调查人员应将每一宗地勾绘到工作用图上,并对街道或地籍街坊按()顺序统一预编宗地号。
房地产经纪机构服务收费包括()。
砂浆应随拌随用,水泥砂浆和水泥混合砂浆必须分别在拌成后多长时间内使用完毕?[2001年第38题]
课堂当中,教师请同学们采用分组的方式,运用捻指、拍手、拍腿、跺脚的方式分别代表女高音、男高音、女低音、男低音四个声部来进行节奏创编并展示。该教师运用了国外著名音乐教育体系中的哪种音乐教学法?()
根据左图规律,右图“?”处应为()。
现有宇宙理论认为,宇宙形成于距今约120亿至150亿年前的一次“大爆炸”。宇宙“大爆炸”后的极短瞬间会形成超高温和超高能量密度,这使得一种称为“夸克一胶子等离子体”的物质能够在约10微秒的极短时间内充斥宇宙,然后再凝聚结合形成原子核等物质。但迄今科学家还难
计算定积分
Doctorsbaffledbyanunexplainedrashonpeople’searsorcheeksshouldbeonalertforaskinallergycausedtoomuch【M1】_____
最新回复
(
0
)