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
30
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".
In Paragraph 2, “It won’t be when” means ____.
选项
A、It is possible when
B、It is not possible when
C、The time hasn’t arrived for
D、The times hasn’t come when
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/vC3d777K
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
Inthelateyearsofthenineteenthcentury,"capital"and"labour"wereenlargingandperfectingtheirrivalorganizationsonm
Itwasnot"thecometofthecentury"expertspredicteditmightbe.However,Kohoutekhasprovidedabonanzaofscientificinfor
Inthe1960stheWestCoastbecameanimportantcenterforrockmusic.LosAngelesandSouthernCaliforniaarefamousforsunshi
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives,21aboutthefuture.Theseremin
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives,21aboutthefuture.Theseremin
Whatistheconversationmainlyabout?
Howdidthewomanspendlastweekend?
YouspentaweekendwiththeFranklins.Afteryoucameback,youwritealettertoMrs.Franklintoexpressyourthanks,andte
Howdidthewomanspendlastweekend?
Whatdoesthemanprefertodoonweekendnights?
随机试题
风湿性二尖瓣狭窄的临床表现有哪些?有关器械检查有哪些?
临床治疗心力衰竭时,应用洋地黄的主要目的是
关于清产核资,下列说法正确的有( )。
非居民企业甲在中国境内未设立机构场所,2015年12月与居民企业乙签订一项新型设备销售合同并提供安装、培训服务,该设备净值为300万元,双方在合同中约定乙支付甲价款合计400万元,未单独列明安装、培训服务的金额,甲派遣员工在境内外负责该项业务,但无法提供真
下列游记选自《梦溪笔谈》的文章是()。
黑色、黄色、白色的筷子各10根摆放在一起,黑暗中想从这些筷子中取出颜色不同的两双筷子,至少要拿出多少根?()
依宪法规定,没有明确限制连续任职不得超过两届的职位有()。
A、 B、 C、 D、 B题干图形均含有竖直对称轴,选项中只有B符合。
辛亥革命时期,资产阶级革命派的阶级基础是()
A、Tohelpnewstudentsmakenewfriends.B、Toreceiveawarmwelcome.C、Togetnewstudentstobefamiliarwiththeircourses.D
最新回复
(
0
)