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
48
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://www.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
Theyearhasflownanditisthat(1)............!TheAnnualDinnerandDance
Accordingtosociologists,thereareseveraldifferentwaysapersonmaybec
Ifa
TheUnitedNationsDevelopmentProgrammesaystheworldisfacingawatercr
【B6】[br]【B8】survived空格前的and连接两个并列句,空格处应填入谓语动词。前一分句中的grewinto表明要用动词的一般过去时。surv
肥皂泡在阳光下呈现彩色,这是光的(??)A.干涉现象 B.衍射现象 C.色散
D
根据法律规定,公证机构办理公证,应当根据不同公证事项的办证规则,分别审查下列哪一
根据《水利工程建设项目施工监理规范》(SL288—2003),监理单位跟踪监测土
某建设项目设备及工器具购置费为600万元,建筑安装工程费为1200万元,工程建设
最新回复
(
0
)