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
Global climate change, often seen as a process stretching over thousands of years, could in fact occur abruptly and unexpectedly
Global climate change, often seen as a process stretching over thousands of years, could in fact occur abruptly and unexpectedly
admin
2012-08-22
59
问题
Global climate change, often seen as a process stretching over thousands of years, could in fact occur abruptly and unexpectedly-—quickly pushing up temperatures by as much as 18 degrees Fahrenheit and wreaking havoc (大破坏,浩劫) on human society, scientists warned on Wednesday.
"Climate change is not always smooth. Sometimes it is abrupt," said Richard Alley, a climate expert at Pennsylvania State University and lead author of a new National Academy of Sciences report on the threat of rapid climatic shifts.
"If you have a very large, abrupt change, a lot of people and a lot of ecosystems are going to notice," he said. "The bigger and faster it is, the harder it will be to deal with. "
The new National Academy of Sciences report, released this week, warns that gradual global warming coupled with other human impacts on the environment could "trip the switch" for sudden climate change.
At the American Geophysical Union meeting on Wednesday, Alley and other environmental scientists said the geological evidence indicated that such rapid climate shifts had occurred frequently in the past—moving temperatures drastically in the space of just a few decades.
"This can happen in less than a human generation, and then it will persist for thousands of years," said David Battisti, an atmospheric scientist at the University of Washington.
The most immediate dangers posed by abrupt climate change range are devastating droughts and floods which could seriously affect both water supply and agriculture across vast stretches of the planet.
Longer term impacts could include changes in the basic systems which determine regional global temperatures. Scientists believe that the Gulf Stream, a current (水流) of warm Atlantic water which now keeps much of Northern Europe temperate, could theoretically reverse direction if enough cool fresh water runs into the north Atlantic from melting ice, a change that would quickly impact European weather.
According to the passage, in the long run, abrupt climate change______.
选项
A、could make the Gulf Stream warmer
B、could melt much ice on Earth
C、could submerge the whole European continent
D、could evaporate all fresh water on Earth
答案
B
解析
细节题。根据最后一段,突然气候变化的长远影响有;改变决定地区性全球气温的基本系统;从理论上讲,the Gulf Stream,一股现在维持着北欧大部分气温的大西洋暖流,会由于大量的冰融化的冷水流人大西洋而倒流,这一变化会很快影响欧洲气候。由此可知,B导致地球上冰雪融化是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/hFXO777K
0
在职攻硕英语联考
相关试题推荐
Youcouldarguethatmanyartistshavebecomemore______happinessbecausemoderntimeshaveseensomuchmisery.
ThefirsteditionofThomasKuhn’s"TheStructureofScientificRevolutions"appearedin1962.【T1】Hisvisionrevolutionizedthe
Thesepollutantscanbe______hundredsandeventhousandsofkilometersbylargeairmasses.
Allcountrieshaveobviousincentivestolearnfrompastmistakes,butthosethathavesuccessfullyrisentothestatusofgreat
Allcountrieshaveobviousincentivestolearnfrompastmistakes,butthosethathavesuccessfullyrisentothestatusofgreat
Thewritingofahistoricalsynthesisinvolvesintegratingthematerialsavailabletothehistorianintoacomprehensiblewhole.
Itisnotavoicewerecognizeatonce,AwhereasourownhandwritingissomethingBwhichweCalmostalwaysknow.Webeginthena
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthis
Everytimeapersoneatssomethinghemakesanutritionaldecision.Heacceptsorrejectsthefoodavailabletohimathomefor
Oneofthegreatadvancesinmoderntechnologyhasbeentheinventionofcomputers.Theyarealreadywidelyusedinindustryand
随机试题
ThetrainwascrowdedandIhadtogetintoacarriage_____alreadysevenotherpeople.
A.主要含三氯羟苯醚和PVM/MA共聚体,还有氟化物,兼有控制菌斑、牙龈炎、牙石和防龋功效的牙膏B.对降低牙本质过敏有作用的牙膏C.可以降低牙釉质在酸中的溶解度和增强釉质再矿化,并预防龋病的牙膏D.使用安全、有效,无明显副作用,但长期使用可使牙齿变色
亚急性感染性心内膜炎最常见的死亡原因是
某个人独资企业的投资人齐某突然死亡,就该个人独资企业的归属,下列说法正确的是()。
收集、调取物证,应遵循下列哪些规则?
向投资者支付已经宣告分配的现金股利能够导致资产和负债同时增加。()
下列属于错账更正方法的是()。
下列各项中,可能会影响企业长期偿债能力的事项有()。Ⅰ.未决诉讼Ⅱ.债务担保Ⅲ.长期租赁Ⅳ.或有负债
你是新闻发布会的发言人,有媒体质疑你提供的数据,你怎么处理?
Herhumorousremarksseemed________,butwereinfactcarefullypreparedbeforehand.
最新回复
(
0
)