首页
登录
职称英语
[originaltext] The world’s first completely automatic railway has been built
[originaltext] The world’s first completely automatic railway has been built
游客
2024-04-27
8
管理
问题
The world’s first completely automatic railway has been built under the busy streets of London. The railway is called the Victoria Line, and it is part of the complete London underground railway.
The new Victoria Line was opened in 1969. This new line was very different from the others. The stations on the other lines need a lot of workers to sell tickets, and to check and to collect them when people leave the trains. This is all different on the Victoria Line. Here a machine checks and collects the tickets, and there are no workers on the platforms.
On the train, there is only one worker. If necessary, this man can drive the train. But usually he just starts it: it runs and stops by itself. The trains are controlled by electrical signals which are sent by the so-called "command spots". The command spots are the same distance apart. Each sends a certain signal. The train always moves at the speed that the command spots allow. If the command spot sends no signals, the train will stop.
Most of the control work is done by computers. The computers also fix the train’s speeds, and send the signals to the command spots.
Other machines make sure that the trains are always a safe distance apart. One train may stay too long at a station: the other trains will then automatically move slower. So there is no danger of accidents on the line.
Questions 19 to 21 are based on the passage you have just heard.
19. What happened to the complete London underground railway in 1969?
20. Who does all the checking and collecting of tickets on the Victoria Line?
21. What is the task of the only worker on the Victoria Line train?
选项
A、To drive the train after it is started automatically.
B、To start the train and to drive it when necessary.
C、To take care of the passengers on the train.
D、To send commanding signals to the command spot.
答案
B
解析
选项均以不定式开头表明,本题考查做某事的目的或行为。文中提到On the train,there is onlyone worker.If necessary,this man can drive the train.But usually he just starts it(列车上仅有的一名工人通常只需启动火车,必要的时候才亲自驾驶),由此可知,答案为B)。
转载请注明原文地址:https://tihaiku.com/zcyy/3573308.html
相关试题推荐
[originaltext]W:Hello,Patrick.Isthatyou?M:Yeah,Jane.WhatcanIdofor
[originaltext]W:Hello,Patrick.Isthatyou?M:Yeah,Jane.WhatcanIdofor
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]Wedonotknowwhenmenfirstbegantousesalt,butwedokn
[originaltext]Wedonotknowwhenmenfirstbegantousesalt,butwedokn
[originaltext]Theworld’sfirstcompletelyautomaticrailwayhasbeenbuilt
随机试题
[originaltext]Manyanalysts,energycompaniesandtheirinvestorsbelievet
Hehasbeenfiredandwillhaveto______overchargeofhisofficetomorrow.A、tak
IfJimDehlseneverneedstoremindhimselfwhy,at67,he’sstilltryingto
TheodoreDreiser’sTrilogyofDesiredoesNOTinclude______.A、AnAmericanTraged
内涵connotation
TCP/IP协议分为四层,分别为应用层、传输层、网际层和网络接口层。不属于应用层
事务T1将数据库中的A值从50改为30,事务T2读A值为30,事务T1又将刚才的
胃的生理功能是()A.受盛化物 B.主持诸气 C.通调水道 D.受纳
在公共行政的基本管理活动中,决策活动主要包括( )。A.制定公共政策 B.确
(2018年真题)在执行内部控制审计时,下列有关非财务报告内部控制重大缺陷的说法
最新回复
(
0
)