首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、All classrooms use cable television. B、City people can see extra programs. C、The charge of cable is much lowered. D、TV signals
A、All classrooms use cable television. B、City people can see extra programs. C、The charge of cable is much lowered. D、TV signals
admin
2018-04-07
34
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://kaotiyun.com/show/gpa7777K
0
大学英语四级
相关试题推荐
A、Theeconomywouldreactbadly.B、Itwoulddelayanyrateincrease.C、Theinflationwouldbetooserious.D、Foreignmarkets’sh
A、Students’abilitytostudy.B、Students’abilitytodoactivities.C、Students’abilitytomaintainattention.D、Students’abili
A、Ontheimprovementofeducation.B、Ontheimprovementofinfrastructure.C、Onthetreatmentoftobacco-relateddiseases.D、On
A、Adogthatrunsonthreelegs.B、Newrobotdogsdevelopedbyscientists.C、Newrobotsthatcanhelppeopleinnaturaldisaster
A、Itisbeneficialtotheworkers’productivity.B、Ithelpstodeliverthelatestnewsofthecompany.C、Itisanefficientway
A、Students,factoryworkersandresearchers.B、Students,farmersandresearchers.C、Students,medicalworkersandresearchers.D
HalloweenA)OnOctober31st,dozensofchildrendressedincostumesknockontheirneighbors’doorsandyell"TrickorTreat
SomeAmericansarealittlenervousaboutthenation’sfuture,butothersfeelsecure,knowingthatthemantheyconsiderthemo
Theriseofmultinationalcorporations(跨国公司),globalmarketing,newcommunicationstechnologies,andshrinkingculturaldiffere
A、Corn.B、Soybean.C、Oat.D、Rye.A短文结尾处提到,“事实上,大豆是继玉米之后美国农民种植的第二大最有价值的农作物。”可见最有价值的农作物是玉米,答案是A。答题方法与上题一样。对于文中语义强调的内容要有所辨别,最后才能按听到
随机试题
下列选项中属于政治性组织的有
影响脑复苏的关键因素是()。
下列关于计算机病毒的叙述错误的是:
组织单位工程施工组织设计交底的是()。
下列场所中不宜选择点型离子感烟火灾探测器的是()。
产业保护政策的目的是打击外商投资、保护本国产业。()
遗觉象是指()。
2017年2月17日,某县公安局发出通知,现将通知上半部分摘录如下“2017年2月6日至2月12日,我辖区内发生一系列针对出租车的砸车窗盗窃车内财物的案件,给人民群众的财产带来较大的损失,公安局提醒广大群众提高防范意识,积极配合公安机关做好打击防控工作。
从所维护四个选项中,选择最合适的一个填入问号处,合之呈现一定规律性:
下列选项中,不是面向对象主要特征的是()
最新回复
(
0
)