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 warming is the gradual increase of the temperature of the earth’s lower atmosphere as a result of the increase in greenho
Global warming is the gradual increase of the temperature of the earth’s lower atmosphere as a result of the increase in greenho
admin
2014-07-20
91
问题
Global warming is the gradual increase of the temperature of the earth’s lower atmosphere as a result of the increase in greenhouse gases since the industrial Revolution. The temperature of the atmosphere near the earth’s surface is warmed through a natural process called the greenhouse effect. Visible, shortwave light comes from the sun to the earth, passing unimpeded through a blanket of thermal, or greenhouse, gases composed largely of water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Infrared radiation reflects off the planet’s surface toward space but does not easily pass through the thermal blanket. Some of it is trapped and reflected downward, keeping the planet at an average temperature suitable to life, about 60°F (16℃).
Growth in industry, agriculture, and transportation since the Industrial Revolution has produced additional quantities of the natural greenhouse gases plus chlorofluorocarbons and other gases, augmenting the thermal blanket. It is generally accepted that this increase in the quantity of greenhouse gases is trapping more heat and increasing global temperatures, making a process that has been beneficial to life potentially disruptive and harmful. During the past century, the atmospheric temperature has risen 1.1°F (0.6℃), and sea level has risen several inches. Some projected, longer-term results of global warming include melting of polar ice, with a resulting rise in sea level and coastal flooding; disruption of drinking water supplies dependent on snow melts; profound changes in agriculture due to climate change; extinction of species as ecological niches disappear; more frequent tropical storms; and an increased incidence of tropical diseases.
Among factors that may be contributing to global warming are the burning of coal and petroleum products (sources of carbon dioxide, methane, nitrous oxide, ozone); deforestation, which increases the amount of carbon dioxide in the atmosphere; methane gas released in animal waste; and increased cattle production, which contributes to deforestation, methane production, and use of fossil fuels.
Much of the debate surrounding global warming has centered on the accuracy of scientific predictions concerning future warming. To predict global climatic trends, climatologists accumulate large historical databases and use them to create computerized models that simulate the earth’s climate. The validity of these models has been a subject of controversy. Skeptics say that the climate is too complicated to be accurately modeled, and that there are too many unknowns. Some also question whether the observed climate changes might simply represent normal fluctuations in global temperature. Nonetheless, for some time there has been general agreement that at least part of the observed warming is the result of human activity, and that the problem needs to be addressed.
A UN Conference on Climate Change, held in Kyoto, Japan, in 1997 resulted in an international agreement to fight global warming, which called for reductions in emissions of greenhouse gases by industrialized nations. Not all industrial countries, however, immediately signed or ratified the accord. In 2001 the G. W. Bush administration announced it would abandon the Kyoto Protocol: because the United States produces about one quarter of the world’s greenhouse gases, this was regarded as a severe blow to the effort to slow global warming. Despite the American move, most other nations agreed later in the year (in Bonn, Germany, and in Marrakech, Morocco) on the details necessary to convert the agreement into a binding international treaty, which came into force in 2005 after ratification by more than 125 nations.
According to Para. 3, ______ does NOT contribute to global warming.
选项
A、emission of cars
B、water pollution
C、domesticated animals
D、shrinking forests
答案
B
解析
推理判断题。要求根据文中第三段判断引起全球变暖的原因。Among factors that may be contributing to global warming are the burning of coal and petroleum products... and use of fossil fuels.可知B未提及,因此正确。methane n.甲烷、沼气;nitrous oxide n.一氧化二氮;ozone n.臭氧;deforestation n.森林开伐
转载请注明原文地址:https://kaotiyun.com/show/gPTK777K
0
专业英语四级
相关试题推荐
Inadditiontotheirmilitaryrole,thefoalsofthenineteenthcenturyprovidednumerousotherbenefitsfortheAmericanWest.
Itisanunderstoodfactthatwaterhelpsmobilizesolublenutrients,transportwastematerialsandregulatesbodytemperature.(
Newandbizarrecrimeshavecomeintobeingwiththeadventofcomputertechnology.Organizedcrimetohasbeendirectlyinvolve
NATOforeignministersaremeetinginLithuania
Journalistshave______aplottokilltheAmericanpresident.
Herearethethreemostcommonmistakeslanguagelearnersmake—andhowtocorrectthem.RigidthinkingLinguistshavefound
Alandfreefromdestruction,pluswealth,naturalresources,andlaborsupply—allthesewereimportant(1)_____inhelpingEngla
TheTVstationhashiredmorethan65peopletogetitsWashington,D.C.operation______.
Thefirecause______damagetothechurch.
Therenewableenergyindustryhasdismissedas"trumped-upnonsense"anattackbyDonaldTrumponScottishwindenergyprojects.
随机试题
A.两药合用时的作用是单用时的作用之和B.两药联合用药时一个药物通过诱导生化反应而使另外一个药物的药效降低C.两个激动药分别作用于生理作用相反的两个特异性受体D.当一种药物与特异性受体结合后,阻止激动药与其结合,从而降低药效E.两药联合用药时一个药
血浆清除率最低的物质是
A.釉质表面有光泽,牙冠色暗黄B.釉质表面有白色或米黄色斑,边界清楚C.釉质表面有可被去除的色素附着D.釉质表面发生白垩色改变,部分釉质缺损E.釉质有缺损,其他部位釉质正常
桥梁静载试验过程发生下列()情况应立刻停止加载并查找原因。
“社区服务”是一种社会福利性服务事业,以下关于“社区服务”的解释不正确的是()。
张某是北京市统计局的一名工作人员,其在对某企业进行统计调查的时候,未出示相关证件,被该企业有关负责人员加以拒绝,于是张某心生怨恨,对该企业进行了一系列的打击报复等行为。请根据上述事实,按照统计法及有关法律、法规规定,回答以下问题,从备选答案中选出正确答案
资产配置需要考虑的因素包括()。
在实行计划生育的情况下,我国每年仍净增人口1400万,其原因是()。
2004~2009年普通高等教育本专科、中等职业教育招生数之和占图中三类教育招生总数比重最大的那一年普通高等教育本专科招生数为()。
他一直都很喜欢爬山。()
最新回复
(
0
)