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
70
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 National Academy of Science report, sudden climate change could be triggered (触发) by______.
选项
A、geological shifts
B、human impacts on the environment
C、natural disasters
D、long-term droughts
答案
B
解析
细节题。由第四段可知,气候的缓慢变化,加上人类对环境的其他影响,可能导致突然的气候变化。因此B是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/YaWO777K
0
在职攻硕英语联考
相关试题推荐
Canhumanspreventclimatechangefromradicallyimpactingonourlivesoverthecomingdecades?ThisisthequestionaskedbyJ
A、Cooleranddrier.B、Warmerandwetter.C、Moderatelyhot.D、Basicallychangeable.A
Thissoftwarenotonlybringsefficiencywithrespecttomemoryutilization,butincreasestheprocessingspeed.
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
Asamother,Iunderstandthepowerfulbondbetweenaparentandchild.Ilovemyson,andIreallywoulddoanythingforhim.S
Asamother,Iunderstandthepowerfulbondbetweenaparentandchild.Ilovemyson,andIreallywoulddoanythingforhim.S
Oneofthedrivingforcesoftoday’sglobalizationis______.Theword"which"inLine7,Para.1refersto______.
Accordingtothepassage,thechiefpurposeofexplorersingoingtounknownplacesinthepastwas______.Whatisthemaingoa
Forcenturies,explorershaveriskedtheirlivesventuringintotheunknownforreasonsthatweretovaryingdegreeseconomican
随机试题
在信托中,委托人凭其对财产的()取得一定利益。
男性,48岁,近日出现头痛,烦躁、多汗,心悸,呕吐,面色苍白,视力模糊,测血压34.7/16.0kPa(260/120mmHg)。其诊断最可能是
失活剂导致牙周组织烧伤的处理如下,除外
患者,男,25岁。晨起觉脐周痛,伴恶心。午后觉下腹明显疼痛,不能忍受。查体:T38℃,BP110/80mmHg,右下腹肌紧张、压痛、反跳痛阳性。为明确诊断,首选的检查是
通过增强脑内GABA介导的抑制作用而抗癫痫的药物有
申请设立期货交易所,不需要向中国证监会提交的文件和材料有( )。
在现金持有成本和应收账款成本中都存在的成本有()。
以下关于企业所得税相关政策的说法中,正确的有()。
简述怎样激发学生的学习动机。
足协官员:“与广大球迷一样,我们也迫切希望惩办那些收受贿赂的黑哨。但打击黑哨要靠真凭实据,不能靠猜测,否则很可能出现冤假错案。所以,有的人在没有证据的情况下,仅根据某些现象猜测某些裁判是黑哨是很不应该的。”以下哪项如果为真,会有力地削弱足协官员的论
最新回复
(
0
)