首页
登录
职称英语
[originaltext] Although I think the United States generally has an excellent
[originaltext] Although I think the United States generally has an excellent
游客
2023-07-28
79
管理
问题
Although I think the United States generally has an excellent system of transportation, I do not think that it does a good job of transporting people between cities that are only a few hundred miles apart. A person commuting between Detroit and Chicago, or between San Francisco and Los Angeles, so-called "strip-cities", may spend only a relatively short time in the air while spending several hours getting to and from the airport. This situation makes flying almost as time-consuming as driving. Moreover, airplanes use a lot of their fuel just getting into the air. They are simply not fuel-efficient on short trips. High-speed trains may be an answer. One fairly new proposal for such a train is for something called "mag-lev", meaning a magnetically levitated train. Mag-levs will not actually ride on the track, but will fly above the track that is magnetically activated. This will save wear and tear on the track. These trains will be able to go faster than 150 miles per hours. At that speed, conventional trains have trouble staying on the track. As you can see, mag-levs offer exciting possibilities for the future.
选项
A、Strip-cities.
B、Transportation of the future.
C、Energy conservation.
D、Advantages of air transportation over railroads.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2875846.html
相关试题推荐
[originaltext]Notuntilsomewhatrecently(thatis,intermsofhumanhistory)
[originaltext]Notuntilsomewhatrecently(thatis,intermsofhumanhistory)
[originaltext]ChristmasisthetimewhenChristiansaroundtheworldcelebrate
[originaltext]ChristmasisthetimewhenChristiansaroundtheworldcelebrate
[originaltext]M:I’mlookingforsomesportsshoes.Canyougivemesomeadvice
[originaltext]Electronicdevicesarechangingthewaypeoplelistentomusic.B
[originaltext]TheWorldHealthOrganizationsays57nationsinsouthernAfrica
[originaltext]TheWorldHealthOrganizationsays57nationsinsouthernAfrica
[originaltext]W:Hey,Tom.What’sup?Whereareyouoffto?M:I’monmywayto
[originaltext]W:Hey,Tom.What’sup?Whereareyouoffto?M:I’monmywayto
随机试题
Wheredothespeakerswork?[br][originaltext]WHi,Mr.Brown,mynameisJoan
ThemainpurposeofthisarticleistohighlypraiseIngridforherdedicationt
[audioFiles]audio_ehbm_j22001(20082)[/audioFiles]A、It’saniceday.B、Nicetom
FactorsforStressandAnxietyAtsomepointintheirliv
在实际情景中,针对问题提出改进计划,通过在实践中实施、验证、改进而得到研究结果。
股疝多见于中年以上妇女,是因为A.骨盆较宽广 B.联合肌腱薄弱 C.腔隙韧带
(2015年真题)属于关税法定纳税义务人的是()。A.进口货物的收货人
对于矿业工程项目而言,制约项目规模大小的首要因素是( )。A.市场因素 B.
适用于各种地质条件和地下水条件,且具有适合各种断面形式和变化断面的高灵活性的开挖
体内缺铁初期的最早最可靠的诊断依据是A.血清转铁蛋白饱和度下降 B.血清铁减低
最新回复
(
0
)