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
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glass in the roof of a greenhouse which allows the sun’s
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glass in the roof of a greenhouse which allows the sun’s
admin
2011-01-10
39
问题
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping.
According to a weather expert’s prediction, the atmosphere will be 3 ℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities. Also. the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere, possibly resulting in an alteration of earth’s chief food-growing zones. 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.
Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. 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?
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 tight, the warming effect of carbon dioxide might thus be serving as a useful counter-balance to the sun’s diminishing heat.
Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be failing. This is ______.
选项
A、mainly because the levels of carbon dioxide are rising
B、possibly because the ice caps in the poles are melting
C、exclusively due to the effect of the inertia of the earth’s climate
D、partly due to variations in the output of solar energy
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/YWcO777K
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
IntheUnitedStatesandinmanyothercountriesaroundtheworld,therearefourmainwaysforpeopletobe【C1】______aboutdeve
InWARMADEEASYNormanSolomondemolishesthemythofanindependentAmericanpresszealouslyguardingsacredvaluesoffreeex
Adozenyearsago,JamesGrant—oneofthewisestcommentatorsonWallStreet—wroteabookcalledTheTroublewithProsperity
JohnwassoangrywithherhusbandthatshetoldhimshewouldratherhavestayedinNewYorktogotoPariswithhim.
Theeconomymaybetroubled,butoneareaisthriving:socialmedia.TheybeginwithFacebookandextendthroughadizzyingarra
Theeconomymaybetroubled,butoneareaisthriving:socialmedia.TheybeginwithFacebookandextendthroughadizzyingarra
当前,亚欧两地区都处于蓬勃发展的阶段。亚洲是世界上最具经济活力的地区,资源丰富,市场广阔,区域合作方兴未艾。欧盟是世界上最大的发达经济体,资本充裕,科技先进,一体化程度高。两地区政治上共识很多,经济上优势互补,文化上各具特色,为开展更广泛和具有实质性的对话
信息通讯技术进步带来无限机遇,推动商务和生产走向高增值,并改善了香港公民的生活质量。同时,这一进步也在多方面带来了新挑战,例如信息安全、数码环境中知识产权及私稳保护、媒体交汇趋势下的适当监管模式方面。领先的数码经济体系需抓住机遇,接受挑战,才能稳居世界前列
下面你将听到的是一段有关中国经济社会发展的讲话。中国的改革开放已经走过了26个年头。26年来,中国发生了翻天覆地的变化。中国经济持续快速增长,国内生产总值从不到1500亿美元增长到1.65万亿美元。进出口总额从206亿美元增长到1.15
女士们,先生们:早上好!很荣幸参加此次论坛,与各位共同探讨环保与发展方面的问题。气候变化是环境问题,但归根到底是发展问题。这个问题是在发展进程中出现的,应该在可持续发展框架下解决。只有各方在促进自身发展过程中不断提高技术水平,积极建立适应可持续
随机试题
E—R图用于描述数据库的________。
《西风颂》是雪莱最负盛名的代表作。这首诗是在何时何地在什么情况下创作的?
良性前列腺增生患者排尿困难的程度主要决定于
《针灸大成》的作者是:
全口义齿合适的凹形磨光面形态可以
客房管理须及时了解房间信息,根据饭店运营情况科学制订维修计划,合理配置资源,这体现了客房服务管理()的要求。
根据以下资料,回答下列问题。下列说法与资料相符的是()。
下列有关出处的引用正确的是()。
下列关于接收参数和传送参数的说法中,正确的是()。
Lookatthestatementsandthecompanynewsreportsbelow.Whichnewsreport(A,B,CorD)doeseachstatement1—7referto?Fo
最新回复
(
0
)