首页
登录
职称英语
What does the speaker say about television signals? [br] [originaltext] CAT
What does the speaker say about television signals? [br] [originaltext] CAT
游客
2023-07-25
52
管理
问题
What does the speaker say about television signals? [br]
CATV is a short way of saying"community antenna television."But"cable television"is the term most people use.Cable television allows viewers to receive TV programs that they cannot pick up with their regular antennas.
Television signals do not follow the curve of the earth.They travel in straight lines in all directions. Signals from a TV station move toward the horizon and then go into space.If you live only a few miles from a station,you may not get any picture at all.
CATV began in 1948.People in places far from TV stations shared the cost of putting up high antennas.A community antenna was usually placed on a hill,a mountain,or on a high tower.The antenna picked up TV signals and fed them into a small local station.From the station,thick wires called cables ran out to nearby homes.Each person using the cable paid a monthly charge.
CATV worked well,and soon new uses were found for it.Local stations could feed programs into empty channels that were not in use.People along the cable could have local news,weather reports,and farm and school news at no extra charge.
Today,cable television has moved into cities.It brings in extra programs that city viewers with regular antennas cannot see.It is also used in many classrooms throughout the country.
选项
A、Pay a monthly charge.
B、Pay a yearly charge.
C、Pay a daily charge.
D、Pay an hourly charge.
答案
A
解析
短文提到,有线电视用户要每月交费,故A正确。
转载请注明原文地址:http://tihaiku.com/zcyy/2868203.html
相关试题推荐
[originaltext]Oneday,apoorboywhowastryingtopayhiswaythroughsch
[originaltext]M:Whatareyoudoinghere,Mary?Whyareyoustandinghere?It’s
[originaltext]M:IfIwereyou,I’dliveinthecityinsteadofgoingtoworkb
[originaltext]M:IfIwereyou,I’dliveinthecityinsteadofgoingtoworkb
[originaltext]M:IfIwereyou,I’dliveinthecityinsteadofgoingtoworkb
[originaltext]M:IfIwereyou,I’dliveinthecityinsteadofgoingtoworkb
[originaltext]M:IfIwereyou,I’dliveinthecityinsteadofgoingtoworkb
[originaltext]Marriageoftenisnoteasy.Loveoftenisnoteasy.Sometimes
[originaltext]Marriageoftenisnoteasy.Loveoftenisnoteasy.Sometimes
[originaltext]TheUniteNations(UN)isthelargestorganizationontheear
随机试题
TidinessTidinessmeans
WhyWeDon’tLikeEnglishClassesI.People’s【T1】______of
求职信applicationletter
【教学过程】 (一)视频导入 教师多媒体出示视频,并讲解:同学们,伴随着美妙的陕西音乐《山丹丹开花红艳艳》,我们的音乐课开始了,提起陕西地区,我不禁想起一句
在运输企业营销活动的流程中,最后一个步骤是( )。A.评估与检验 B.反馈
在慢性胃炎时,属于癌前病变的是()A.浅表胃炎伴肠上皮化生 B.浅表
为提高桩基水平承载力,下列哪些选项的措施是有效的?( )A、约束桩顶的自由度
作为调节社会经济运行的一种重要经济杠杆,提高税率通常将()。 A.提高政府的
培养目标
A.pH<7.35,PaCO>50mmHg B.pH<7.35,PaO<6
最新回复
(
0
)