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
41
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.
In this passage, scientists warn of______.
选项
A、sudden world climate change
B、gradual global warming
C、long-term influence of climate shift
D、political havoc on human society
答案
A
解析
细节题。根据文章开头,科学家警告,全球气候可能发生突然、出乎意料的变化,推动气温大幅度上升,为人类社会带来浩劫。因此A为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/iaWO777K
0
在职攻硕英语联考
相关试题推荐
Increasedconsumptionofrenewableenergyrequiresproducersandconsumersto______renewablesources.
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Asamother,Iunderstandthepowerfulbondbetweenaparentandchild.Ilovemyson,andIreallywoulddoanythingforhim.S
Asamother,Iunderstandthepowerfulbondbetweenaparentandchild.Ilovemyson,andIreallywoulddoanythingforhim.S
Economicsoftenmissesanimportantelementofinequalitybetweenmalesandfemales:unpaidwork.Themainmeasureofeconomica
Economicrecessionswillweakenone’sconfidenceinthegovernmentandthreatensocial______.
Workforceisdefinedasthetotalnumberofpeoplewhoareavailabletoworkandearnincomes.Thedefinitionincludeseveryone
Accordingtothepassage,thechiefpurposeofexplorersingoingtounknownplacesinthepastwas______.Whatisthemaingoa
Americanstodayhavedifferenteatinghabitsthaninthepast.Thereisawideselectionoffoodavailable.Theyhaveabroader
随机试题
企业文化
风痧邪人气营型的治疗首选方剂是()
下列哪项不是亚急性感染性心内膜炎的临床表现
哪项城市土地使用特性是正确的?
1948年9月至1949年1月,中国人民解放军进行的战略决战是()。
实事求是是思想路线,但不是工作方法。()
根据下面材料回答下列小题。2004年,某市房地产市场供需高位均衡,并呈现供略大于需的合理态势,商品房竣工面积1956.29万平方米,比去年同期增长45.3%;销售面积1876.31万平方米,比去年同期增长21.0%。供需绝对差额79.98万平方
在面向对象数据模型中,子类可以从其超类中继承所有的属性和方法,这有利于实现()。A)可移植性B)要扩充性C)安全性D)可靠性
B
WhyistheNativeLanguageLearntSoWell?Howdoesithappenthatchildrenlearntheirmothertonguesowell?Whenwecompa
最新回复
(
0
)