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
Is Earth Getting Warmer? The National Academy of Sciences claimed recently that people should caution rather than panic abou
Is Earth Getting Warmer? The National Academy of Sciences claimed recently that people should caution rather than panic abou
admin
2012-01-14
108
问题
Is Earth Getting Warmer?
The National Academy of Sciences claimed recently that people should caution rather than panic about the greenhouse effect. It is said that the greenhouse effect will result in global warming, which will elevate the earth’s temperature by 3~9 degrees Fahrenheit. The greenhouse effect results when carbon dioxide (CO
2
) and certain other gases in the atmosphere allow the sun’s ultraviolet rays to penetrate and warm the earth, but then absorb the infrared energy the earth radiates back into space—much as glass in a greenhouse does—forming a kind of "thermal blanket" around the planet. The greenhouse effect will mean much more than hotter summers and milder winters. It may alter rainfall, affect crop yields and eventually—as glaciers begin to melt—raise the level of the seas. It had long been reported that the earth’s temperature would rise, melting the icecaps, raising the seas, flooding the land. Half of Long Island would be under water. Midwest would become a desert. However, the findings of latest studies have indicated that the earth might not undergo warmer temperatures and rather it may experience colder weather. Due to the variable behavior of the sun, the earth may be confronted with another Ice Age. In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming: in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.
(A) [■] Satellite pictures show that large areas of Antarctic ice are already disappearing.
(B) [■] The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth,
(C) [■] Scientists conclude, therefore, that up to now natural influences on the weather have exceeded those caused by man. The question is: Which natural cause has most effect on the weather?.
(D)[■] One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates, every 27.5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth’s atmospheric pressure, and consequently on wind circulation. The sun is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward. Scientists are now finding mutual relations between models of solar-weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not, One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth’s climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful counterbalance to the sun’s diminishing heat. In addition to the variable behavior of the sun, new research has also demonstrated that global warming will probably lead in the end to a period of much colder weather, at least in Europe. Scientists base their theory on what happened the last time the world warmed up, 8300 years ago. They have discovered that when the ice melted from the northern polar ice cap it became trapped in an enormous lake in northern Canada. As more ice melted this lake suddenly burst open, releasing millions of tons of freezing fresh water into the North Atlantic.
This flood of water was so large that it prevented the normal flow of water in the Atlantic, which takes warm water from the tropics north to Europe and thus temperatures in Europe dropped by between three and eight degrees Celsius over the next two hundred years.
Scientists believe that a similar process could occur in the next century if the Greenland Ice Sheet starts to melt.
Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
选项
A、The flow of water in the Atlantic takes warm water from the tropics north to Europe, which resulted in the drop in temperature in Europe in the future.
B、The temperature in the Europe dropped by between three and eight degrees Celsius over the next two hundred years due to the flood of water.
C、Huge amounts of water from northern Canada flooded Europe two hundred years ago, which caused the temperature in Europe to have dropped by between three and eight degrees Celsius.
D、The flood of water caused by the ice melting from the northern polar ice cap resulted in the drop in temperature in Europe over the next two hundred years.
答案
D
解析
本题为句子简化题,考查考生是否具备理解文章中某一复杂句子的基本意思并用简化的句子来表达原句基本内容的能力。文中涂黑的句子的意思为:“在大西洋,温水通常从热带朝北流向欧洲,但由于冰所融化的水量非常大,所以阻挡了大西洋的水顺畅地流动,因此欧洲的气温在以后的两百年中下降了3~8摄氏度。”故选项D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/N8yO777K
0
托福(TOEFL)
相关试题推荐
Completethesummarybelow.ChooseNOMORETHANTHREEWORDSfromthepassageforeachanswer.Writeyouranswersinboxes16-21
Youshouldspendabout20minutesonQuestions1-13,whicharebasedonReadingPassage1below.AverybriefhistoryoftimeTh
TheConceptofChildhoodinWesternCountriesThehistoryofchildhoodhasbeenaheatedtopicinsocialhistorysincetheh
CompanyInnovationA.InashabbyofficeindowntownManhattan,agroupof30AI(artificialintelligence)programmersfrom
Tiktaalikrosaeisconsideredtobeanevolutionary______.【37】
Whatpercentageofthestudentsaremature?Theuniversityaccommodationserviceshavea______thatstudentscanlookthrough
Thievesoftentargetstudents’homesbecausestudents______.The______isvaliduntiltheendofJune.
Thievesoftentargetstudents’homesbecausestudents______.Academic______areinsuredupto£5000.
thelibrarythesportsbuilding
Thereneedstobeabalancebetweentheneedsof______livingindevelopedenvironmentsandthepreservationofnaturalhabitat
随机试题
阅读白居易《杜陵叟》一诗,然后回答下题。杜陵叟伤农夫之困也杜陵叟,杜陵居,岁种薄田一顷余。三月无雨旱风起,麦苗不秀多黄死。九月降霜秋早寒,禾穗未熟皆青干。长吏明知不申破,急敛暴征求考课。典桑卖地纳官租,明年衣食将何如
患者,男,45岁。发热伴间断咯血7天,尿常规:红细胞10~15个/HP,胸片示以肺门为中心分布的磨玻璃影。辅助检查:抗肾小球基膜抗体阳性。最可能的诊断是
HehadgonetoShanghai,________tovisitafriendwhoisill.
溶血性黄疸的实验室检查结果呈强阳性的是
某国有企业在经营过程中,在一次电视广告中虚构了与其同行业的另一家a企业产品质量有瑕疵的事实,由于这一广告,a企业该产品的销售量在一段时间内明显下降,名誉尽毁。人民检察院经过调查以损害商业信誉罪对该国有企业提起公诉。在诉讼过程中,a企业委托了代理律师。据此,
在组织审计项目组讨论舞弊风险时,注册会计师认为应当讨论的内容有()。
DSB信号的频带比AM信号的频带要小。()
2005年与2004年相比,该市主要客源国游客人数上升了()。下列选项中说法正确的一项是()。
小明计划开车用2小时回家,行驶1小时后,汽车发生故障,半小时后,汽车恢复正常,问如果按计划时间到家,小明需提速多少?()
隶农制
最新回复
(
0
)