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 about th
Is Earth Getting Warmer? The National Academy of Sciences claimed recently that people should caution rather than panic about th
admin
2013-08-12
28
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, 8 300 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.
In Paragraph 1, the author mentions all of the following results of the greenhouse effect EXCEPT______.
选项
A、Midwest would become a desert
B、half of Long Island would be under water
C、the earth’s temperature would rise
D、Arizona would turn into a rain forest
答案
D
解析
本题为正误判断题,考查考生能否根据文章中阐明的信息判断什么信息是正确的,什么信息是错误的,什么是文章中没有提到的。题目问:在第一段中作者提到了所有温室效应的结果,只有下列哪一项作者没有提到?由第一段可知,只有选项D的内容没有提到,所以选D。
转载请注明原文地址:https://kaotiyun.com/show/G1fO777K
0
托福(TOEFL)
相关试题推荐
Tofindouthowmuchholidayscost,youshouldpressbutton
Tofindouthowmuchholidayscost,youshouldpressbutton
Tofindouthowmuchholidayscost,youshouldpressbutton
Whatiscurrentlythemainareaofworkofeachofthefollowingpeople?ChooseFIVEanswersfromtheboxandwritethecorrect
JacksaysthatinLondonthesedays,manypeople
Labelthemapbelow.WritethecorrectletterA-lnexttoQuestions18-20.OldOxfordSchool______...
Completethesentencesbelow.WriteNOMORETHANTWOWORDSforeachanswer.JobsatisfactionstudyWorkersshouldbereassured
Completethenotesbelow.WriteONEWORDAND/ORANUMBERforeachanswer.DRIVINGSCHOOLExampleAnswerLookingfordrivingless
Completethesentencesbelow.WriteONEWORDONLYforeachanswer.FootballintheUKAtpresentthemainreasonwhyUKschools
Completethenotesbelow.WriteONEWORDAND/ORANUMBERforeachanswer.DRIVINGSCHOOLExampleAnswerLookingfordrivingless
随机试题
设函数f(x),g(x)满足条件:f’(x)=g(x),g’(x)=f(x).又f(0)=0,g(x)≠0.试求由曲线与x=0,x=t(t>0),y=1所围平面图形的面积,
超声波有纵波、横波和表面波三种振态,下列哪项是错误的
等剂量曲线的构成
在期货合约交割期内,买方或者卖方客户违约的,由违约方承担违约责任。()
拟设立基金管理公司的申请人要提前( )年向交易所递交自律承诺书。
()年10月15日至16日,神舟五号载人飞船成功升空并安全着陆。
由于面试官的偏见产生的误差包括()
病例:患者,男,65岁,高血压病18年,血脂高3年,冠心病心绞痛2年,近2个月胸痛发作频繁,休息或含服硝酸甘油效果欠佳,轻咳嗽吐少量白痰,1天来与家人争吵,胸痛20分钟不缓解,伴大汗送急诊。责任护士通过对患者的病史进行护理评估后,应考虑可能发生(
同盟会成立后发动的第一次武装起义是()
Summer’sunofficialendclosedoutadarkseasonforworkingteenagers.Theunemploymentratefor16-to19-year-oldsticked
最新回复
(
0
)