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
For the first time in the scientific community, there is total agreement that the activity of humans is at least partly responsi
For the first time in the scientific community, there is total agreement that the activity of humans is at least partly responsi
admin
2011-01-23
32
问题
For the first time in the scientific community, there is total agreement that the activity of humans is at least partly responsible for the rise of global temperature — specifically the emission of greenhouse gases like carbon dioxide, which is released by the burning of wood, coal and petroleum products. Reducing harmful emissions is just one area in which the United Nations Intergovernmental Panel is decidedly optimistic. For one thing, in the short term it might not prove that difficult. Efficiency improvements alone could cut energy needs by as much as 30 percent at virtually no extra cost and, in developed countries, emission reductions of up to 60 percent "are technically feasible". In the longer term, harmful emissions will be reduced as the world changes over to cheaper, less environmentally damaging energy sources.
So, if it is economically and technically feasible to reduce harmful emissions, why is almost nothing being done? There are two main reasons. The first stems from the uncertainty about how hot the planet is going to get. The current estimate is extremely broad — between 0.8 and 3.5 degrees Celsius by 2100. If the former prediction is accurate, it may be that we can adapt to it without difficulty. If, on the other hand, the latter is closer to reality, a complete rethink of the world’s energy supplies is already long overdue.
This leads directly to the second problem — the time scale involved. It is difficult to get people to act when predictions may take between 50 and 100 years to materialize. For politicians, who face elections every half decade or so. preventative action against a future threat — the magnitude of which is still very uncertain — carries heavy political risks.
Even if politicians in the developed world were to be forced into action, what of the developing world. which is economically dependent on fossil fuels? Should it reduce emissions, and suffer the consequences, because of mistakes made by the developed world? One suggestion is that developing countries be given allowances above the current emission standards. This would enable them to meet their industrialized needs and ultimately help them to finance environmentally sound technologies. This would seem the only realistic way of getting agreement from developing countries — a vital requirement because, if preventative action is going to work, you really do have to have everyone on board.
In the longer span of the future what is most important in reducing harmful emissions?
选项
A、Efficiency improvements.
B、New energy sources.
C、New technologies.
D、Burning less of wood. coal and petroleum.
答案
B
解析
参考第一段最后一句,改用更经济和危害更少的燃料是减少废气排放的根本,所以选B。
转载请注明原文地址:https://kaotiyun.com/show/e2td777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
CoincidingwiththegroundbreakingtheoryofbiologicalevolutionproposedbyBritishnaturalistCharlesDarwininthe1860s,B
Amongtheraftofbooks,articles,jokes,romanticcomedies,self-helpguidesandotherwritingsdiscussingmarriage,somefamil
Amongtheraftofbooks,articles,jokes,romanticcomedies,self-helpguidesandotherwritingsdiscussingmarriage,somefamil
Properarrangementofclassroomspaceisimportanttoencouraginginteraction.Mostofushavenoticedhowimportantphysicalse
Payandproductivity,itisgenerallyassumed,shouldberelated.Buttherelationshipseemstoweaken【B1】______peoplegetolder
Payandproductivity,itisgenerallyassumed,shouldberelated.Buttherelationshipseemstoweaken【B1】______peoplegetolder
Youmaysaythatthebusinessofmarkingbooksisgoingtoslowdownyourreading.Itprobablywill.That’soneofthe【B1】_____
Thepatient,accordingtotheanalyst’sreport,is
Properarrangementofclassroomspaceisimportanttoencouraginginteraction.Mostofushavenoticedhowimportantphysicalse
随机试题
请从父母教养方式的角度分析以下案例: 南燕爸爸从不对南燕生气,但也从不过问南燕的事情。南燕向爸爸说起幼儿园里有趣的事情,爸爸也只是心不在焉地“嗯”一下,眼睛却看着别的地方。南燕爸爸说他其实不喜欢小孩子。南燕的所有事情都由妈妈负责,每天早上南燕都是第一个
阅读下面语段,回答问题:【端正好】碧云天,黄花地,西风紧,北雁南飞。晓来谁染霜林醉?总是离人泪。【滚绣球】恨相见得迟,怨归去得疾。柳丝长玉骢难系,恨不得倩疏林挂住斜晖。马儿迍迍的行,车儿快快的随,却告了相思回避,破题儿又早别离。听得道一
30岁男性,反复双眼睑水肿伴夜尿增多2年,血压160/100mmHg,尿蛋白(+),红细胞5~10/HP,颗粒管型1~2/HP,血肌酐145μmol/L,血红蛋白85g/L,血清白蛋白32g/L。下列哪种药物本例不宜应用
鳃裂囊肿见皮样囊肿见
1974年印度2个邦中200个村庄,因村民食用了霉变玉米暴发了中毒性肝炎,症状为发热、呕吐、厌食、黄疸,严重者出现腹水、水肿、甚至死亡,尸检中可见到肝胆管增生。检测发现这些霉变玉米含有高浓度的
非淋菌性尿道炎应选择药物()。
遥感技术是建立在物体()理论基础上的。
马克思指出:“任何一个民族,如果停止劳动,不用说一年,就是几个星期,也要灭亡。”这说明()。
你是一名新进公务员,你的领导和同事都有不同的专业背景、个性、兴趣,你怎么做才能处理好跟他们的关系。从而得到他们的支持和帮助呢?
A、Wecanalwayshavehealthysnackfood.B、Wecan’ttakeinenoughfat.C、Theycankeepusfullwithlessfood.D、Theycanprovi
最新回复
(
0
)