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
If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years fro
If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years fro
admin
2013-05-19
142
问题
If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years from now, giving out heat-trapping carbon dioxide into the atmosphere — and yet that carbon dioxide will not contribute to global warming.
The scientists, F. Jeffrey Martin and William L. Kubic Jr., are proposing a concept, which they have named Green Freedom, for removing carbon dioxide from the air and turning it back into gasoline.
The idea is simple. Air would be blown over a liquid solution which would absorb the carbon dioxide. The carbon dioxide would then be extracted (提取) and subjected to chemical reactions that would turn it into fuel.
Although they have not yet built a synthetic fuel factory, or even a small prototype (原型), the scientists say it is all based on existing technology.
"Everything in the concept has been built, is operating or has a close cousin that is operating," Dr. Martin said.
The Los Alamos proposal does not violate any laws of physics, and other scientists have independently suggested similar ideas.
In the efforts to reduce humanity’s emissions of carbon dioxide, three solutions have been offered: hydrvgen(氢)-powered fuel cells, electric cars and biofuels. Biofuels are gasoline substitutes produced from plants like corn or sugar cane. Plants absorb carbon dioxide as they grow, but growing crops for fuel takes up wide strips of land.
Hydrogen-powered cars emit no carbon dioxide, but producing hydrogen requires copious (大量的) energy, and if that energy comes from coal-fired power plants, then the problem has not been solved.
Electric cars also push the carbon dioxide problem to the power plant. And electric cars have typically been limited to a range of tens of miles as opposed to the hundreds of miles that can be driven on a tank of gas.
Gasoline, it turns out, is an almost ideal fuel (except that it produces CO2). If it can be made out of carbon dioxide in the air, the Los Alamos concept may mean there is little reason to switch, after all.
"It’s definitely worth pursuing," said Martin I. Hoffert, a professor of physics at New York University. Other scientists also said the proposal looked promising but could not evaluate it fully because the details had not been published.
What will happen if what is proposed by the two scientists becomes true?
选项
A、There will be no need for gasoline substitutes.
B、Air pollution will become a thing of the past.
C、People will be able to use much cheaper energy.
D、There will be no more gasoline-powered vehicles.
答案
A
解析
倒数第二段首先提到汽油几乎是理想的能量(除了产生二氧化碳外)。然后提到,如果它可以用空气中的二氧化碳来制造的话,那么,洛斯阿拉莫斯的理念就可能意味着,根本没有任何理由去改变能源,也就是说,如果两位科学家提到的用空气中的二氧化碳来制造汽油的设想变为现实,就不需要寻找汽油的替代品了,故答案为[A]。空气污染不仅包括二氧化碳污染,还包括其他方面,故排除[B];[C]在文中未提及;[D]与原文意思相反。
转载请注明原文地址:https://kaotiyun.com/show/nTg7777K
0
大学英语四级
相关试题推荐
Oneofthemostimportantfeaturesthatdistinguishreadingfromlisteningisthenatureoftheaudience.【C1】______thewriterof
OneCity,TwoVisionsExpertsdifferinmethod,butagreethatpeoplemakeacityprosper.Whatshouldbethenexts
ForAmericans,timeismoney.Theysay,"Youonlygetsomuchtimeinthislife;you’dbetteruseitwisely."The【B1】______wil
Duringthe1992presidentialcampaign,HillaryRodhamClintonobserved,"Ourlivesareamixtureofdifferentroles.Mostofus
Ofallthecomponentsofagoodnight’ssleep,dreamsseemtobeleastwithinourcontrol.Indreams,awindowopensintoaworl
A、Morethan16bills.B、Morethan60bills.C、Morethan17bills.D、Morethan70bills.D事实细节题。本题考查对数字的辨认,由第二段末句“..morethan70
A、In1928.B、In1929.C、In1932.D、In1940.C事实细节题。木题主要考查学生对1928和1932两个时间的辨认,文章第二段第三句提到“hewasstillelectedgovernorofNewYor
ElevendaysafterhersonBenjamin’sbirthbyC-section,LindaCoaleawokeinthemiddleofthenightinpain,onelegbadlyswo
ElevendaysafterhersonBenjamin’sbirthbyC-section,LindaCoaleawokeinthemiddleofthenightinpain,onelegbadlyswo
随机试题
市场异常可以被分为( )。
补偿贸易最基本的做法是()
产后发热感染邪毒证的发热特点为
男,26岁。饱餐后剧烈活动时腹痛2小时,持续性痛阵发性加剧,脐周伴腰背痛,呕吐频繁,吐后症状无缓解。腹肌紧张,脐周有压痛及反跳痛,肠鸣音亢进,有气过水声。最可能的诊断是
下列立法中,属于程序立法的有()。
期货公司股东、董事和经理层限制、阻挠首席风险官正常开展工作的,首席风险官可以向中国证监会派出机构报告。()
甲公司为增值税一般纳税人,适用的增值税税率为16%,商品售价中不包含增值税。销售商品和提供劳务均符合收入确认条件,其成本在确认收入时逐笔结转。2018年12月,甲公司发生如下交易或事项:(1)6日,向乙公司销售A商品一批,商品售价为600万元,增值税税
案情:陈某见熟人赵某做生意赚了不少钱便产生歹意,勾结高某,谎称赵某欠自己10万元货款未还,请高某协助索要,并承诺要回款项后给高某1万元作为酬谢。高某同意。某日,陈某和高某以谈生意为名把赵某诱骗到稻香楼宾馆某房间,共同将赵扣押,并由高某对赵某进行看管。次日,
A、 B、 C、 D、 B
下列叙述中正确的是
最新回复
(
0
)