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
2015-09-30
40
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.
Abrupt climate change______.
选项
A、is unprecedented in human history
B、will not happen in the near future
C、will probably cause dramatic drop in temperature
D、will last thousands of years once it happens
答案
D
解析
细节题。此题涉及多个细节。文章开头已讲过,全球气候突然变化将推动气温大幅度上升,所以C不对。根据第五段,有地质证据证明这种急剧气候变化在过去频繁发生过,因此A不对;在第六段中科学家说,这种变化有可能在一代人的时间内再次发生,然后将持续数千年。由此可知,B与此不符,而D是符合的,所以D是本题正确答案。
转载请注明原文地址:https://jikaoti.com/ti/uUIYFFFM
0
在职攻硕英语联考
相关试题推荐
TheInternethasmadesomemensorichandambitiousthatEarthnolongerseemslargeenoughtocontaintheirfortunesoregos.
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Economicsoftenmissesanimportantelementofinequalitybetweenmalesandfemales:unpaidwork.Themainmeasureofeconomica
The"madmoment"inthefirstparagraphreferstothetimewhenwe______.Inthispassage,theauthormainlytellsus______.
Thebesttitleforthepassageis______.Theterm"electroniccity"inPara.2refersto______.
Despitemuchloosetalkaboutthenewglobaleconomy,today’sinternationaleconomicintegrationisnotunprecedented.The50ye
Itisvirtuallyimpossibleto______thenumberofpeopleintheworldwhohaveacquiredanadequateworkingknowledgeofEnglish
______theclaimaboutGermaneconomicmight,itissomewhatsurprisinghowrelativelysmalltheGermaneconomyactuallyis.
Accordingtothepassage,thechiefpurposeofexplorersingoingtounknownplacesinthepastwas______.Thepassagetellsus
随机试题
Everysuit-dresssoldbythelikesofGucciorGivenchyisbilledasamust-havethatseason.But,itturnsout,somearemorem
县级以上各级人民政府对本行政区域内职业教育的管理职责不包括()
以下有关对脾的描述,哪一项不正确
我国药品不良反应报告制度的法定报告主体不包括
初步设计文件成果包括:
采用权益法核算时,下列各项中,会引起长期股权投资账面价值发生变动的有()。
在下列合同中,当事人一方有权请求人民法院或仲裁机构变更或者撤销的合同有()。
下面哪些陈述表达了法律、法规和规章之间的关系?()
Accordingtosomedoctorsandpoliticians,theamountofsaltconsumed______.FromDr.Dustan’sstudywecaninferthat______
Forthispart,youareallowed30minutestowriteacompositiononthetopic:LearningChineseFeverintheWorld.Youshouldw
最新回复
(
0
)