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
考研
As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficien
As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficien
admin
2021-01-06
67
问题
As we have learned in our previous lectures, our country generally has an excellent system of transportation. There are efficient airlines, railway systems as well as motorway all across the country; however, if you have been to an airport recently, you’ ve probably noticed that it is becoming more and more crowded. Although airplanes provide the faster way to travel hundreds or thousands of miles, I don’ t think that our industry can do a good job of transporting people between cities that only a short distance apart. A person who travels between London and Birmingham, the so-called strip cities, may spend only relatively a 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 and of course more expensive, moreover, planes use a lot of fuel in taking off and landing down. So they are simply not fuel efficient on short flights. In my opinion, high speed train may be an answer to that problem. By the end of last century, a proposal for such a train was put forward, this new type of train is called maglev, meaning magnetic
levitated
train, the maglev train will not ride on the tracks, but will make use of the magnetic repulsion to glide or float above the tracks. Since the train and tracks do not touch and rub against each other, a lot of maintenance work can be saved. These trains will be able to travel at a speed about 300 miles per hour. Undoubtedly, at this speed, conventional trains will have trouble, staying on the tracks. At present, the operation of maglev trains is still on the experimental stage, for example, Germany and China. However, I’ m sure this new type of train on the horizon will revolutionize transportation of the 21st century, the way airplane did in the 20th century.
Compared with traditional trains, what advantage of maglev trains is mentioned?
选项
A、They are much safer when in high speed.
B、They do not require much track maintenance.
C、They are to revolutionize transportation.
D、They are experiment-tested before operation.
答案
B
解析
文中倒数第五句讲到因为列车和车轨不摩擦,“a lot of maintenance work can besaved”,这就是相比原来火车所具有的优势。A项没有提及。C、D项不是相比原来火车所具有的优势。
转载请注明原文地址:https://www.kaotiyun.com/show/Yk1Z777K
0
考研英语一
相关试题推荐
TheTreasurycouldpocket20millionayearinextrafinesoncethecountry’sspeedcameranetworkisexpanded.Motoringorgani
TheTreasurycouldpocket20millionayearinextrafinesoncethecountry’sspeedcameranetworkisexpanded.Motoringorgani
TheTreasurycouldpocket20millionayearinextrafinesoncethecountry’sspeedcameranetworkisexpanded.Motoringorgani
TheTreasurycouldpocket20millionayearinextrafinesoncethecountry’sspeedcameranetworkisexpanded.Motoringorgani
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewith
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewith
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewith
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewith
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewith
随机试题
Thereisanewtypeofsmalladvertisementbecomingincreasinglycommoninnewspaperclassifiedcolumns.Itissometimesplaced
患者男性,43岁。因发热1月余、加重伴咳嗽、血痰2周而入院。近1月来出现不规则发热,以下午低热为多,有盗汗;近2周出现高热,渐出现咳嗽,咳血痰,经规律抗菌药物治疗无效。曾为长途车司机,有野游史。近3年有静脉吸毒,而后逐渐消瘦,体重下降约10kg。入院体检:
题16~23:胶带机通廊悬挂在厂房框架上,通廊宽8m,两侧为走道,中间为卸料和布料设备,结构布置如图5-6所示。通廊结构采用Q235B钢,手工焊接使用E43型电焊条,要求焊缝质量等级为二级。的轴心拉力设计值N=520kN,采用2[16a,其截
声音从声源发出,在均匀无限大的空气中传播的过程中,()。
关于《建设项目环境影响评价资质管理办法》,下列说法错误的是()。
三星堆遗址分布面积达12万平方公里。()
马克思把商品转换成货币称为“商品的惊险的跳跃”,“这个跳跃如果不成功,摔坏的不是商品,但一定是商品占有者”。这是因为只有商品变为货币()。
否定之否定的规律揭示了()。
下列关于类型转换的说法中,正确的是()。
SinceWorldWarⅡ,therehasbeenaclearlydiscernibletrend,especiallyamongthegrowinggroupofcollegestudents,towardea
最新回复
(
0
)