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
Climate Change; The Long Reach 1 Earth is warming. Sea levels are rising. There’ s more carbon in the air, and Arctic ice is
Climate Change; The Long Reach 1 Earth is warming. Sea levels are rising. There’ s more carbon in the air, and Arctic ice is
admin
2014-09-13
56
问题
Climate Change; The Long Reach
1 Earth is warming. Sea levels are rising. There’ s more carbon in the air, and Arctic ice is melting faster than at any time in recorded history. Scientists who study the environment to better gauge(评估)Earth’ s future climate now argue that these changes may not reverse for a very long time.
2 People burn fossil fuels like coal and oil for energy. That burning releases carbon dioxide, a colorless gas. In the air, this gas traps heat at Earth’s surface. And the more carbon dioxide released, the more the planet warms. If current consumption of fossil fuels doesn’ t slow, the long-term climate impacts could last thousands of years—and be more severe than scientists had been expecting. Climatologist Richard Zeebe of the University of Hawaii at Manoa offers this conclusion in a new paper.
3 Most climate-change studies look at what’ s going to happen in the next century or so. During that time, changes in the planet’ s environment could nudge(推动)global warming even higher. For example, snow and ice reflect sunlight back into space. But as these melt, sunlight can now reach—and warm—the exposed ground. This extra heat raises the air temperature even more, causing even more snow to melt. This type of rapid exaggeration of impacts is called a "fast feedback".
4 Zeebe says it’ s important to look at fast feedbacks. However, he adds, they’ re limited. From a climate change perspective, " This century is the most important time for the next few generations, " he told Science News. "But the world is not ending in 2100. " For this new study, Zeebe now focuses on "slow feedbacks". While fast feedback events unfold over decades or centuries, slow feedbacks can take thousands of years. Melting of continental ice sheets and the migration of plant life—as they relocate to more comfortable areas—are two examples of slow feedbacks.
5 Zeebe gathered information from previously published studies investigating how such processes played out over thousands of years during past dramatic changes in climate. Then he came up with a forecast for the future that accounts for both slow and fast feedback processes. Climate forecasts that use only fast feedbacks predict a 4.5 degree Celsius(8.1 degree Fahrenheit)change by the year 3000. But slow feedbacks added another 1.5° C—for a 6°C total increase, Zeebe reports. He also found that slow feedback events will cause global warming to persist for thousands of years after people run out of fossil fuels to burn.
A. Fast Feedbacks
B. A Prediction of Future Climate Change
C. Rising of Sea Levels
D. Slow Feedbacks
E. Impact of Burning Fossil Fuels
F. Unpredictability of Feedback Processes
Paragraph 4
选项
答案
D
解析
第四段主要表明,化石燃料燃烧的危害将长期存在,不会在短时间内得到根治,其危害将会持续数千年。这些是对“缓慢反馈”的解释,冰山融化与植物迁徙是“缓慢反馈”的两个例子。
转载请注明原文地址:https://kaotiyun.com/show/5KQd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
OldandActiveItiswell-knownthatlifeexpectancyislongerinJapanthaninmostothercountries.A【C1】______reportals
EarlyorLaterDayCareTheBritishpsychoanalystJohnBowlbymaintainsthatseparationfromtheparentsduringthesensitiv
SleepLetsBrainFileMemoriesTosleep.Perchancetofile?FindingspublishedonlinethisweekbytheProceedingsoftheNa
MoreAboutAlzheimer’sDiseaseScientistshavedevelopedskinteststhatmaybeusedinthefuturetoidentifypeoplewith
AKeepingGoodRelationswithLocalBusinessmenBServiceProvidedbyLocalNewspapersCLargeCirculationoftheNationalNe
SleepSleepispartofaperson’sdailyactivitycycle.Thereareseveraldifferentstagesofsleep,andtheytoooccurinc
ItcameassomethingofasurprisewhenDiana,PrincessofWales,madeatriptoAngolain1997,tosupporttheRedCross’scamp
Evolutionhashardlychangedthehorseshoecrabovermillionsofyears.
Thedrinkingwaterhasbecamecontaminatedwithlead.
One-thirdofParentsLackFactsaboutChildDevelopmentOne-thirdofparentsofbabieshaveasurprisinglylowknowledgeof
随机试题
Heleft______animportantdetailinhisaccount.
下列哪些部位的挤压伤易发生挤压综合征
全科医学与社区卫生服务的关系可以体现为
工程项目目标系统表现为一个()结构。
与抑郁性神经症的主要临床特点不符合的是()。
根据美国心理学家科尔伯格的理论,儿童道德判断处于后习俗水平的对应发展阶段为_________和普遍伦理取向。
“九.一八”事变后,中国共产党及时发表宣言、通电,提出()
下面是20世纪20、30年代中国共产党内关于革命道路问题的几组材料材料1乡村是统治阶级的四肢,城市才是他们的头脑与心腹,单只斩断了他的四肢,而没有斩断他的头脑,炸裂他的心腹,还不能制他的最后的死命。——摘自李立三《新的革命高潮前面的诸问题》(1930
Fromtheverybeginning,waterhasfurnishedmanwithasourceoffoodandahighwaytotravel.Thefirstcivilizationsarose【2
TennisstarChrisEvert,whoretiredfromthegameaftereighteenyears,perhaps______morethananyonetomakewomen’sprofessi
最新回复
(
0
)