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
63
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 5
选项
答案
B
解析
第五段的第二句是主题句,主要讲的是Zeebe在考虑了“快速反馈”和“缓慢反馈”的同时,对未来气候变化做的一种预测。
转载请注明原文地址:https://kaotiyun.com/show/fKQd777K
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
StomachUlcerStomachulcersarethecauseofseverepainformanypeople.Doctorshavebeenabletohelplessenthepainof
Ofalltheplanetsinthissolarsystem,MercuryisnearesttheSun.
EbolaOutbreak1YouarelikelyawarethatseveralcountriesinWestAfricaarebattlinganEbolaoutbreak.Ebolaisadangerous
One-thirdofParentsLackFactsaboutChildDevelopmentOne-thirdofparentsofbabieshaveasurprisinglylowknowledgeof
MyLifeatRendaIlearnedveryquicklythatbeingateachingassistant(TA)attheUniversityofIowawouldbedifferentfrom
Theyhavebeenlivingunderthemostappallingconditionsfortwoyears.
Webecomesusceptibletothemoodsandfeelings,thebehaviorandtreatmentofourspouse,
"Brand"isageneraltermwhichcoversnarrowertermssuchas"brandname","brandmark",and"trademark."Abrandnameisinte
Thereportadvocatedsettingupdaytrainingcolleges.
随机试题
小儿哭声绵长,口作吮乳状,多为
阅读
划拨土地使用权一般不得出租,但符合()条件的,经市、县人民政府土地行政主管部门和房产管理部门批准,其划拨土地使用权和地上建筑物、其他附着物所有权可以出租。
债券是指依法定程序发行的,约定在一定期限还本付息的有价证券。其特点是收益固定,风险较大。()
下列企业生产过程中发生的各项费用,属于间接费用的有()。
在直方图中,矩形的宽度表示()。
企业把整个市场看作一个大的目标市场,只向市场推出单一的标准化产品,并以统一的营销方式销售。这种市场覆盖策略是()。
财务管理环境是指对企业财务活动和财务管理产生影响作用的企业各种外部条件的统称。()
A、 B、 C、 D、 C将3写成2+根号1,将9写成7+根号4,那么这个数列可看成分别为质数列3,5,7,(11),13和根号数列根号1、根号2、根号3、根号4、(根号5)、根号6的和。所以选择C。
如何正确理解社会形态发展是统一性和多样性的统一?
最新回复
(
0
)