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
2024-01-30
36
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/3405827.html
相关试题推荐
[originaltext]W:Goodmorning,Mr.Pitt.Dositdown.M:Thankyou.W:Firstof
[originaltext]M:Hello.W:Hello,welcometo"Advice"radioprogram.What’syou
[originaltext]ThebodiesofdozensofAfricanimmigrants,discoveredoffth
[originaltext]ThebodiesofdozensofAfricanimmigrants,discoveredoffth
[originaltext]DozensofrecordingstarsbegangatheringonaHollywoodstud
[originaltext]AnIndonesiaferrypackedwithhundredsofrefugeesescaping
[originaltext]AnIndonesiaferrypackedwithhundredsofrefugeesescaping
[originaltext]Nowadaystherearemoreandmorewaysofgoingonholiday.Mo
[originaltext]Togetadriver’slicense,youmusttakeaseriesoftests.
[originaltext]Togetadriver’slicense,youmusttakeaseriesoftests.
随机试题
Priceisnottheonlythingcustomersconsiderbefore______whattobuy.A、decidi
Weoftenhearthe【B1】______,"Everybodytalksaboutweather,butnobodydoes
TipsonReadingI.Three【T1】phasesofreading【T1】______
A.直线 B.圆 C.正弦曲线 D.椭圆
A.紫菀B.款冬花C.桑白皮D.百部E.苏子润肺下气,消痰止咳()。
人类嗜T细胞病毒仅感染哪种细胞A.CD4T淋巴细胞B.CD8T淋巴细胞C.红细胞
A. B. C. D.
在莎士比亚喜剧《威尼斯商人》中,安东尼与夏洛克订立契约,约定由夏洛克借款给安东尼
合同生效后,当事人就质量没有约定或者约定不明确的,可以采用的确定相关内容方式有:
38岁经产妇,2次不良产史,现足月妊娠,阵发性腹痛7小时住院待产,检查子宫收缩2
最新回复
(
0
)