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
56
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.
One of the most immediate dangers posed by abrupt climate change is______.
选项
A、disastrous droughts and floods
B、extinction of animals and plants
C、disappearance of agriculture
D、rising sea level
答案
A
解析
细节题。根据倒数第二段,突然气候变化的最直接危险是毁灭性的干旱和洪水,严重影响水源供应和农业。所以A是正确答案。
转载请注明原文地址:https://www.kaotiyun.com/show/laWO777K
0
在职攻硕英语联考
相关试题推荐
Canhumanspreventclimatechangefromradicallyimpactingonourlivesoverthecomingdecades?ThisisthequestionaskedbyJ
NorthKorealaunchedalong-rangerocketcarryingwhatitcalledasatellite________globalwarnings.
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
A、Aresponsiblemusicteacher.B、Expensivemusicalinstruments.C、AccesstomusicviatheInternet.D、Videosaboutsingingorda
Asamother,Iunderstandthepowerfulbondbetweenaparentandchild.Ilovemyson,andIreallywoulddoanythingforhim.S
Economicsoftenmissesanimportantelementofinequalitybetweenmalesandfemales:unpaidwork.Themainmeasureofeconomica
Whichofthefollowingcountrieshasenjoyedthefastesteconomicgrowthinhistory?Thestudyoftherelationshipbetweenprod
随机试题
Theexperimentwas______beingafailure;itwasagreatsuccess.
怀疑霍乱弧菌感染的粪便应该接种于何种培养基中增菌
红光中学与周到服装厂签订一份合同。由周到服装厂为红光中学加工1000套初一学生校服。因材料提供、式样更改、服装厂债权纠纷等问题,引起纠纷。如该批校服是由周到服装厂自备面料加工,在1000套校服交付红光中学之前,下列表述正确的是:()
关于政府采购项目中的废标,下列说法中正确的是()。
(2008)下列围护结构,哪种热惰性指标最小?
应纳印花税的凭证应当于()贴花。
进货检验的形式通常有________。
根据我国现行宪法,有权改变或撤销地方各级国家行政机关不适当的决定和命令的国家机关是()
软件需求规格说明书的作用不包括
A、Efficiencyofgovernment.B、Environmentalprotection.C、Decentralization.D、Trafficconcerns.C根据题干要求找寻到有关韩国总统的说法,发现原文第三段“hes
最新回复
(
0
)