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
47
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".
The last paragraph says that ____.
选项
A、you can view more programs with a digital TV
B、a football game can be shot with 20 cameras
C、everything you want will appear on the screen
D、broadcasters should consider it their duty to send out different versions of the same program for custom-viewing
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/qC3d777K
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
Duringthetraditionalweddingceremony,thebrideandthebridegroompromiseeachotherlifelongdevotion.Yet,aboutoneouto
Morethan30,000driversandpassengerswhositinthefrontofthevehiclesarekilledorseriouslyinjuredeachyear.Ataspe
Morethan30,000driversandpassengerswhositinthefrontofthevehiclesarekilledorseriouslyinjuredeachyear.Ataspe
Itwasnot"thecometofthecentury"expertspredicteditmightbe.However,Kohoutekhasprovidedabonanzaofscientificinfor
Properarrangementofclassroomspaceisimportanttoencouraginginteraction.Mostofushavenoticedhowimportantphysicalse
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【B1】______readthenotestha
YouspentaweekendwiththeFranklins.Afteryoucameback,youwritealettertoMrs.Franklintoexpressyourthanks,andte
Tounderstandwhysomeonebecomesanoptimistorapessimist,ithelpstounderstandwhatdistinguishesthem.Sayyoucrashyo
Whatdoesthemanprefertodoonweekendnights?
随机试题
Intheeighteenth-century,oneofthefirstmoderneconomists,AdamSmith,thoughtthatthe"wholeannualproduceofthelandand
子宫肌瘤所致的子宫出血,与下列哪些因素有关
解表剂不宜用于()
以下哪项是磁石的功效()
男性,20岁,感冒后7天出现颜面及双下肢浮肿,尿少。查:血压160/100mmHg,尿蛋白(++),尿沉渣红细胞(++),Scr130μmol/L。2周后少尿,BUN28mmol/L,Set620μmol/L。哪种疾病可能性大()
期货公司一般设置()等组织机构。
下列有关无形资产会计处理的表述中,错误的是( )。
企业要高速发展,必须有强大的营利能力;企业只有不断开发新产品,才能保证强大的营利能力;而企业如果忽视研发人才的培养,则无法开发新产品。以下结论,可以从题干的判定中推出的是:Ⅰ.想要高速发展的企业,不能忽视研发人才的培养Ⅱ.无法研发出新产品的企业,无法得
对长度为n的线性表排序,在最坏情况下,比较次数不是n(n-1),2的排序方法是
A、Itmightincreaseairportcapacity.B、Itmightlowerpropertyvalues.C、Itmightleadtoeffectivemodificationofexistingje
最新回复
(
0
)