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
2012-02-29
22
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: hydrogen(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/ozf7777K
0
大学英语四级
相关试题推荐
A、Onboardoftheplane.B、Inatheater.C、Inanoffice.D、Inthesubway.A推理判断题。女士感到非常生气,因为在飞机上,机长不停地广播地名,使她不能人睡。男士说对于那些从未坐过此次班
Unlessanewassemblelineisinstalled,____________(否则提高产量是不可能的).
A、Attwoo’clock.B、Atthreeo’clock.C、Atfouro’clock.D、Atfiveo’clock.D综合推断题。女士说是凌晨两点起的火,男士说消防员用了三个小时将其扑灭,由此可知,火被扑灭的时间是五点
A、7.85perdollar.B、7.88perdollar.C、8.05perdollar.D、8.08perdollar.D对应文中Inspotdealings,theyuanclosedat8.08toth
Peoplewhodescribethem.themselvesasperfectionistsmaydowellonjobinterviews,butnewstudyfindingssuggestthatthey
A、Byplane.B、Bybus.C、Bycar.D、Bytrain.B本题关键在于理解but后面的内容,男士说takingabuswouldbecheaperthandrivingorflying(乘巴士比开车或坐
Sportsisoneoftheworld’slargestindustries,andmostathletesareprofessionalswhoarepaidfortheirefforts.Becausean
A、Hedecidedtocontinuehisproject.B、Hewasunabletogetsufficientmoney.C、Lackoflandpreventedhissuccess.D、Hewassu
Scienceforself-reliancehas,inrecentyears,becomeamatterofgreatconcernforThirdWorldanddevelopingnations.Thesen
Thesoundsofthemusicgrew______inthedistance.Itbecamestilljustforawhile.
随机试题
A.制霉菌素B.联苯苄唑C.环吡酮胺D.阿莫罗芬E.萘替芬属于唑类抗真菌药的是()。
只要没有利益冲突,且不影响本职工作,银行业从业人员可以在其他商业机构兼职。()
在请求分页存储管理中,若所需页面不在内存中,则会产生()中断。
孔祥瑞是天津港煤码头公司操作一队队长,只有初中文凭的他在港口工作的30多年里,通过勤奋学习,不断钻研,把精力倾注在技术改革和创新上,在工作岗位上取得科研成果150余项,为企业创造经济效益8400万元,是新时期产业工人的先进典型,孔祥瑞的成功信条是:“可以没
炎热的夏季使人难以忍受,2011年8月7日,身强力壮的李刚躲进有空调的小汽车里过夜,第二天人们发现他时,他已死在车里多时,经法医解剖,排除了李刚因疾病死亡的可能和被人谋杀的可能。那么李刚的死是因为()。
在国际货币基金组织的普通贷款中,最基本的两类贷款是储备部分的贷款和_________。(复旦大学2001)
Drivestraightahead,andthenyouwillseea____totheShanghai-NanjingExpressway.
A、Shewantstobooksomeplanetickets.B、Herassistantneedstobuysomebooksforthem.C、Sheneedstofindagoodhotelfort
Noonewhoreadsthenewspaperscandoubttheseriousnessofcrimeinthiscountry.Notaday【C1】______withoutnumerousrobber
A、Acyclistbeinginterviewed.B、Asportsreporterfaralocalnewsshow.C、Lastyear’stourwinner.D、PresidentoftheOttawaB
最新回复
(
0
)