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 most serious problem humanity has ever faced. There’s more hype (宣传) on this environmental issue than any
Global warming is the most serious problem humanity has ever faced. There’s more hype (宣传) on this environmental issue than any
admin
2010-05-26
48
问题
Global warming is the most serious problem humanity has ever faced. There’s more hype (宣传) on this environmental issue than any other. In the late 1970s computer models predicted that because of the heat-trapping buildup of carbon dioxide in the atmosphere, the earth would warm up by several degrees over the next century. A lot of bad weather gets linked to global warming in the media, which regularly predict that more and fiercer hurricanes, longer droughts and more severe rainstorms will result.
What has actually been going on? One computer model says the earth’s temperature should have already increased by an easily detectable 0.3 to 0.4 degrees Celsius since 1979. Some satellite data, however, show that the earth’s temperature has actually cooled slightly over the last 18 years.
And despite seasonal variations, the frequency of intense Atlantic hurricanes and their maximum wind speed have not increased over the past half-century.
If climate models turn out to be correct, it may be prudent to limit carbon-dioxide emissions in the future. But many experts feel there is no need to rush into drastic action. "We have a decade or so to collect data and refine our models before we might have to act," says Jerry North, professor of meteorology at Texas A&M. There is also time for scientists to develop carbon-intensive energy technologies, which we can switch to later at a lower cost.
"Even though it will disappoint many of you, the evidence is that you have a very bright future." This is how I finished my presentation at American University, eliciting a few chuckles from the audience.
On a more serious note, I asked the students to consider a radical proposition: Economic growth and technological progress are not enemies of the environment but, are perhaps its best friends, since they allow us to reduce humanity’s footprint on the natural world. High-tech agriculture boosts farm productivity, which means a cheaper good supply and more land spared for nature. Better sewage treatment means that our rivers and streams can run freer of pollutants.
What is the writer’s attitude to the climate in the future?
选项
A、Disappointed.
B、Pessimistic.
C、Concerned.
D、Optimistic.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/c6V7777K
0
大学英语四级
相关试题推荐
A、Newspaperreadersapplyreadingtechniquesskillfully.B、Newspaperreadersjumpfromonenewspapertoanother.C、Newspaperrea
A、TheStudents’Union.B、Theuniversityadministration.C、Thefaculty.D、Theseniorstudents.A
A、Atagasstation.B、Atahospital,C、Atabank.D、Atschool.B
A、Themanisusuallythelastonetohandinhistestpaper.B、Themanhasmadeamessofhisfinalexam.C、Themandoesn’thave
YoungpeopleintheUnitedStateshaveawidevarietyofinterestsapart【C1】______theirschoolwork.Aschildren,bothboysand
A、Brushyourteethrightbeforeyougotobedintheevening.B、Haveasfewofyourteethpulledoutaspossible.C、Haveyourte
Forthispart,youareallowed30minutestowriteanapplicationletterbecausethesummervacationisdrawingnearandyouwan
Personalexperiences,culture,religion,andageinfluenceaperson’s【S1】______aboutdeath.Manypeoplefeardeath.Othersref
A、Theirparentsaccompanyandteachthem.B、Theygotoaregularschool.C、Hollywoodteachersgivethemlessons.D、Theygetthei
A、GodowntoGuangzhouandworkwithherbrother.B、Keepjob-seekinginnortherncities.C、Callherbrothertoteachhiminimpo
随机试题
在进行立焊、仰焊时应选择小的焊接电流。()
悬浮式二灰粒料的特点是()。
政府采购通常被称为阳光工程,这说明政府采购具备的功能是()。
对送股的股权登记、增加某股东股数的计算依据是( )。
陈某用自己的轿车作抵押向银行借款40万元,并办理抵押登记手续。陈某驾驶该车出行时,不慎发生交通事故。经鉴定,该车的价值损失了30%。保险公司赔偿了该车损失。下列关于该抵押担保的表述中,正确的有()。
下列属于民事权利公力救济方式的是
结合材料,回答问题:材料11999年3月25日一6月10日,以美国为首的北约以南斯拉夫联盟共和国科索沃省出现“人道主义灾难”为借口,未经联合国授权便以“国际社会”的名义对一个主权国家进行了为期78天的空袭,世人称之为科索沃战争。南联盟最
设无向树T有7片树叶,其余顶点度数均为3,则T中3度顶点有()。
TheMonarchbutterflytravels5,000kmeachyear.Geneticallymodifiedmaizeisn’tpoisonoustothebutterflies.
TheGulfBetweenCollegeStudentsandLibrariansA)Studentsrarelyasklibrariansforhelp,evenwhentheyneedit.Thisis
最新回复
(
0
)