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
What can be said about the report by the National Academy of Sciences? What hinders the extensive use of renewable energy sourc
What can be said about the report by the National Academy of Sciences? What hinders the extensive use of renewable energy sourc
admin
2022-07-24
47
问题
What can be said about the report by the National Academy of Sciences?
What hinders the extensive use of renewable energy sources?
W: Mr. Welch, do you think there is any doubt now that global warming exists?
M: Let me put it this way. A few determined skeptics don’t accept it, but the over-whelming majority of scientists do. The report the National Academy of Sciences issued was very balanced. They noticed some uncertainties, for example, when and where impacts might be felt and to what degree. But the conclusion was that the earth is warming. This change is induced by human activity and it will get worse.
W: Do a few degrees of warming really matter?
M: The earth is warmed by I degree Fahrenheit in the last 100 years, more in some places, like the Arctic, where there has been an increase of 4 to 5 degrees since the 1950s. Polar bears are having a terrible time there and may be extinct by the end of this century. Already, we are seeing changes in Alaska, where roads are buckling in places and some major pipelines no longer fit together. Cold water fish that used to be found off the Alaskan Coast are no longer there.
W: Can a new energy policy help?
M: Energy policy is climate policy since fossil fuels are the main sources of green-house gases, so the question becomes: Where do we get our energy? In the United States, 51% of electricity comes from coal, 20% nuclear, 16. 5% natural gas, 7% hydroelectric, 3% oil and the rest, renewables, geothermal, wind, and solar.
W: How much power can we realistically expect to derive from renewable sources?
M: 10% by 2020 is realistic or with a considered effort, 30% by 2050. Without major breakthroughs, it’s hard to get beyond a third, because most renewables are intermittent. You need better ways of storing the energy.
选项
A、Lack of advanced storing technology.
B、A need for joint efforts of scientists.
C、A shortage of practical support from the public.
D、An unreliable market demand.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/GnPd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
Capitalmarketsneedapush.ItisanurgenttaskforChinatoacceleratethedevelopmentofthecapitalmarkettofacilitat
Dr.MarvinMarshalldevelopedasystemthatwouldpromoteresponsiblebehaviorbyinternallymotivatingstudents.Drawingonhis
Theautumnrainshadcomeinwithtwoangrystorms,andLazyRiverwaswakingup.Inaweekschool(31)beclosedforEastervac
Whatdoesateacheroftenfeelinhisfirstyearofteaching?
WhichofthefollowingstatementsaboutthetelephoneofthefutureisNOTtrue?
Beforeabigexam,asoundnight’ssleepwilldoyoubetterthanporingovertextbooks.That,atleast,isthefolkwisdom.And
A=RotherhitheB=BarnesC=WillesdenD=King’sCrossWhichcity…usedtohavelotofproblemssuchasdrugs,streetcrime,
Itwasamomentmostbusinessexecutiveswouldpausetosavor:latelastyear,GermansportinggoodspioneerAdidaslearnedthat
Periodicallyinhistory,therecomeperiodsofgreattransitioninwhichworkchangesitsmeaning.Therewasatime,perhaps10,
Austerityisawordoftenfoundonthelipsofpoliticiansandeconomistsatthemoment,butitisseldomheardfromtechnologis
随机试题
建立质量成本管理的组织体系,包括以下三项基本内容:建立质量成本管理工作系统;明确各主要部门和人员的职责范围;___________。
法定优先受偿款是假定实现抵押权时,法律规定优先于本次抵押贷款受偿的款额,包括()。
下列各类型成本计划中,互相衔接和不断深化,构成了整个工程施工成本的计划过程的有()。为了取得施工成本管理的理想效果,应从多方面采取措施实施管理,这些措施可归纳为()。
ABC公司2006年度设定的每季末预算现金余额的额定范围为50~60万元,其中,年末余额已预定为60万元。假定当前银行约定的单笔短期借款必须为10万元的倍数,年利息率为6%,借款发生在相关季度的期初,每季末计算并支付借款利息,还款发生在相关季度的期末。2
根据企业破产法律制度的规定,下列款项中,应当从破产财产中最先拨付的是()。(2002年)
学生思想品德的形成具有长期性和反复性,所以,对学生的品德教育不能操之过急。()
______指人们对自己是否能够成功地从事某一成就行为的主观判断,是由班杜拉提出的。
原码加减交替除法又称为不恢复余数法,因此( )。
Personswhoareoverweightshouldwatchtheirdietcarefullyinordertolosepounds.Thebestwaytodothisistostartaweig
A、Bill’sbrother.B、Bill’swife.C、Bill’sfather.D、Bill’sfather-in-law.D女士说“他妻子叫他回去送她的父亲去医院”,可判断D(Bill的岳父)正确。
最新回复
(
0
)