首页
登录
职称英语
Global warming is the most serious problem humanity has ever faced. There’s
Global warming is the most serious problem humanity has ever faced. There’s
游客
2024-02-28
55
管理
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. [br] 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://tihaiku.com/zcyy/3489642.html
相关试题推荐
Educatorsknowthatteachingstudentstowritewellisnoteasy.Oneproblemi
Educatorsknowthatteachingstudentstowritewellisnoteasy.Oneproblemi
[originaltext]M:Morning,Alice.Stillhavingproblemswithyourfaucet?W:No,
[originaltext]M:Morning,Alice.Stillhavingproblemswithyourfaucet?W:No,
[originaltext]Oneofthebiggestproblemsindevelopingcountriesishunger
[originaltext]Oneofthebiggestproblemsindevelopingcountriesishunger
[originaltext]Oneofthebiggestproblemsindevelopingcountriesishunger
Yourcare-freenatureoften____________(遇到钱的问题).comesupagainsttheproblemo
[originaltext]Lastweekwediscussedtheproblemofrisingprices,or,int
Noonewhoreadsthenewspaperscandoubttheseriousnessofcrimeinthisc
随机试题
[originaltext]Recently,aprofessorofphilosophyintheUnitedStateshas
[originaltext]W:Iwanttoregisterforthismathematicscourse.M:I’msorryr
Educationgivesustheknowledgeoftheworldaroundus.Itdevelopswithu
Whenwillthewoman’scousinholdhiswedding?[br][originaltext]F:MayIhave
现行机关一般的发文处理程序包括()签发(会签),缮印,校对,用印,注办,发出,
给定关系R(A,B,C,D)和关系S(A,C,D,E,F),对其进行自然连接
假定2013的6月20日某工业企业活期存款的累计计息积数为500000,月利率为
土方开挖必须做好基坑排水、截水和降水措施,地下水位应保持低于开挖面至少()mm。
货币政策与财政政策配合的主要方式中,()的政策组合是通过减税等扩张性财政政策措
交界性或临界性肿瘤是指A.形态属良性,但浸润性生长 B.良性肿瘤位于两个脏器交
最新回复
(
0
)