首页
登录
职称英语
[originaltext] CATV is a short way of saying "community antenna television."
[originaltext] CATV is a short way of saying "community antenna television."
游客
2024-01-27
4
管理
问题
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.
16 What does the speaker say about television signals?
17 What should people do if they used the cable?
18 What happens after cable television has moved into cities?
选项
A、All classrooms use cable television.
B、City people can see extra programs.
C、The charge of cable is much lowered.
D、TV signals can be received more easily.
答案
B
解析
短文提到,有线电视进入城市后,给城市观众带来了普通天线无法提供的额外节目,故B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3397985.html
相关试题推荐
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
[originaltext]Iliveinasmallvillageinthecountry.MywifeandIrunt
[originaltext]Iliveinasmallvillageinthecountry.MywifeandIrunt
[originaltext]W:Goodafternoon,Mr.Burke.Didyouhaveagoodlunch?M:Yes,
[originaltext]M:Hello.Ineedtotalkwithsomeoneaboutmydriver’slicense.
[originaltext]Fifteenyearsago,Japaneseengineersastonishedtheworldwi
[originaltext]Fifteenyearsago,Japaneseengineersastonishedtheworldwi
随机试题
Forthispart,youareallowed30minutestowriteashortessayonthetopicPr
WhoseGraveisThisAnyway?Therearemanylegendsaboutthe
[originaltext]W.AreyougoingtothefairnextSaturday?M.Whatfair?W:The
临床上判断心脏舒张功能最实用的方法是()A.心脏X线片 B.超声多普勒
下列有关债券到期期限与债券价格关系表述正确的是()。A.到期期限相对较短的零息票
以下哪种材料不是生产玻璃的原料?( )A.石英砂 B.纯碱 C.长石 D
顾客在与运输部门人员接触中所得到的服务是( )。 A.服务的职能质量
关于目前你所在的单位或者工作岗位,你总的感受是()。 A.有前景,干得很起劲
用枸橼酸和碳酸氢钠作片剂崩解剂的机制是A.膨胀作用 B.毛细管作用 C.湿润
患者,女性,14岁。诉右下颌后牙进食时疼痛月余,无明显自发痛。口腔检查:右下第一
最新回复
(
0
)