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 is the main topic of the passage?
What is the main topic of the passage?
admin
2013-10-11
39
问题
What is the main topic of the passage?
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, the 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. [15]They simply are 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 a maglev, meaning a magnetically levitated train. [16] Maglevs will not actually ride on the tracks, but will fly above tracks that are magnetically activated. [17] This will save wear and tear on the tracks. These trains will be able to go faster than 150 miles an hour. At that speed, conventional trains have trouble staying on the tracks. [14] As you can see, maglevs offer exciting possibilities for the future.
选项
A、Energy conservation.
B、Transportation of the future.
C、Strip cities.
D、Advantages of air transportation over railroads.
答案
B
解析
本文开头指出美国相邻几百公里城市之间的交通并不令人满意,此时航空和公路都没有优势,最后指出了磁悬浮列车(maglev)为解决将来的交通提供了可能。由此可知B为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/8nGK777K
0
专业英语四级
相关试题推荐
Bearsvaryasmuchincharacterandhabitsasthey【C1】______insize.Althoughafewkinds,suchasgrizzliesandpolarbears,a
MaryandJohnarebusylookingforahotelfortheirwedding
Whatisveryimportantfordevelopingcountries’economicgrowthaccordingtothemainworldlendingagencies?
ThedisputebetweenNorthKoreaandtheUnitedStatesismainlyon______
Whatdoesthepassagemainlydiscuss?
Listentothefollowingpassage.Altogetherthepassagewillbereadtoyoufourtimes.Duringthefirstreading,whichwillbe
Ourprincipal,ameanoldlady,______atravelforages,buttoourgreatdisappointmentnothinghashappenedyet.
Hadhebeengivensomeinformation,he______thequestions.
—"Howdidthegroupimproveitsdiscussion?"—"Theyalltookpart,eachmember______theresponsibilityofleadingonemeeting.
WhatisSamsufferingfrom?
随机试题
电子商务活动中,公共互联网络上流动的内容包括()
季铵化合物控制菌斑的主要作用是A.干扰菌斑附着B.破坏菌斑基质C.清除菌斑内毒素D.改变细菌细胞膜的渗透性E.控制菌斑繁殖
甲婚后经常被其丈夫乙打骂,向某区人民法院提起离婚诉讼,该区人民法院审理后认为双方感情确已破裂,判决准予离婚,并对共有财产进行了分割。甲认为区人民法院对财产的处理不公平,于是向中级人民法院提起上诉。在二审审理期间,乙因意外事故死亡,二审法院遂裁定终结诉讼。关
关于包气带防污性能,说法正确的有()。
下列关于风险监管的说法中,不正确的是()
下列各项中,应计入加工收回后直接出售的委托加工物资成本的有()。
要约:凡一个或一个以上特定的人提出的订立合同的建议,如果其内容十分确定,并且表明要约人在其要约一旦得到承诺就受其约束的意思,即构成要约。根据以上定义,下列陈述中,不属于要约的一项是( )
隶书分为()、()两种。
计算机网络分为局域网、城域网和广域网,下列属于局域网的是_______。
"EngineeringClass"Whatisthislecturemainlyabout?
最新回复
(
0
)