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
Coming soon to your TV: views of the hottest live basketabll plays from any seat in the stadium. What a better look at that thre
Coming soon to your TV: views of the hottest live basketabll plays from any seat in the stadium. What a better look at that thre
admin
2011-01-21
29
问题
Coming soon to your TV: views of the hottest live basketabll plays from any seat in the stadium. What a better look at that three-point shot? Call for a replay from behind the basket. Or better yet, follow the "view" of the ball as it goes through the net.
While watching, you might use a built-in speakerphone to talk with a fan in the stands. Sounds impossible? It won’ be when the television industries combine to create digital TV—machines that receive, send, store and manipulate TV programs the way computers now manipulate other data.
Industry and government representatives recently reached an agreement on how this technology will take place. New digital TVs that allow current TVs to receive digital signals may hit store shelves by next spring.
To understand how the digital revolution will change the way you watch TV, it helps to know how TVs work now. Today, TV networks such as CBS and Fox broadcast TV show as analog electrical signals. These signals travel via the airwaves, satellites, or cable as a continuous stream of electromagnetic energy (like light and radio waves). But this system leaves a lot of room for error. The main problem is that interference can change the voltage of the signal as it travels. This may result in a distorted of miscolored picture. If we send out the signal in a form that is nearly free from interference -- binary code, pictures and colors are not distorted.
You will need to buy a new TV to receive these signals. And the new sets may cost 1, 000 US dollars more than today’s TVs. But they will come with other benefits that may make the price worthwhile. For one thing, the screens will be wider, like movie screens. In addition, the color will be richer. And you will also get digital CD-quality sound.
Besides these benefits, digital TVs can offer you much wider choice of programs. Digital data can expand TV choices because computers can compress digital signals. Broadcasters will be able to send out six times as much as information on the same "channel".
What is the author’s opinion about the new TV?
选项
A、You can wait for a while until the price drops.
B、Several new qualities make the new TV worth the high price.
C、The price is too high because, technologically speaking, the new TV is not entirely new.
D、The new TV sells for 1, 000 US dollars, a price that is quite reasonable.
答案
B
解析
转载请注明原文地址:https://jikaoti.com/ti/QGDsFFFM
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Morethan30,000driversandpassengerswhositinthefrontofthevehiclesarekilledorseriouslyinjuredeachyear.Ataspe
Howmanypeopleappliedbutdidn’truntherace?
Properarrangementofclassroomspaceisimportanttoencouraginginteraction.Mostofushavenoticedhowimportantphysicalse
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives,21aboutthefuture.Theseremin
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives,21aboutthefuture.Theseremin
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【B1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【B1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【B1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【B1】______readthenotestha
Whatistheconversationmainlyabout?
随机试题
使用VC++2010打开考生文件夹下prog1中的解决方案。此解决方案的项目中包含一个源程序文件prog1.c。在此程序中,已知学生的记录由学号和学习成绩构成,N名学生的数据已存入a结构体数组中。请编写函数fun(),该函数的功能是找出成绩最低的学生记录,
轴类零件常用两中心孔作为定位基准,下列说法正确的是()。
通信的任务就是传递信息。()
A.SANSB.SAPSC.PANSSD.CGIE.HAMD评定患者抑郁情绪的量表是
符合幕墙节能工程技术要求的有()
甲、乙公司均为增值税一般纳税人,有关债务重组业务如下:资料一:2017年4月1日,甲公司销售一批商品给乙公司,销售货款总额为4680万元(含增值税)。由于乙公司发生财务困难不能按期偿还,2017年12月5日,甲、乙双方经协商进行债务重组,签订的债务
关于道德的说法,正确的是()。
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouonlyseethemoutofthecornerofyoureye.Theseare
Whentheybrokeopenthedoor,theyfoundastrangemanliedonthefloorunconscious.
Iftheyhadn’tspentallthemoneyonthelottery,theirlife______somiserableatthemoment.
最新回复
(
0
)