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 医学全在线 > 职称英语 > 考试试题 > 正文
职称英语等级考试《卫生类A级》模拟试卷-概括大意和完成句子
更新:2014/8/22 字体:

第3部分:概括大意和完成句子(第23~30题,每题1分,共8分) 下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为指定段落每段选择个小标题;(2)第27~30题要求从所给的6个选项中为每个句子确定一个最佳选项。
23、回答23-30题:
Compact Disks
1 If someone says to you your music CDs don’t really hold any music on them, and they only have numbers recorded on them, you may not believe it.In fact, he is right in that sound is actually recorded onto the CDs as special numbers — a digital code.1 The code is pressed onto the CD as bumps on a long spiral track almost five kilometerslong.These bumps are an average of 0.5 microns wide.
2 A small laser beam shines onto the bumps as the CD turns.The light is reflected back to a receiver that records how the laser light bounces back.This lets the CD player2 turn the reflected light back into the original code.This means you can hear the original code as music.
3 Digital codes are used with many technologies.E-mail needs these kinds of code numbers.Space probes communicate with their ground station on earth using digital codes.Bar codes are read as digital codes in computer systems.Digital communications with cell phones need digital codes.Weather radios also tune in to specific signals using these codes.
4 There are many types of compact disk.One format is called CD-RWs.They can be recorded on and re-recorded on (rewritten on) as you would do with a floppy disk3.Another format is the CD-ROM.The technology for recording on these disks is different from other CDs. These CDs have a dye layer that the CD writer can darken or leave clear. The clear and dark spots are the digital code.CD-ROM stands for Compact Disc — Read Only
Memory.4 This disk is like a “super” floppy disk that can hold lots of information.One CD-ROM can hold the same amount of data as 500 floppy disks.Information is permanently recorded onto it.Computer games and other programs are considered to be CD-ROMs.
5 CDs were first sold to the public in 1982.These CDs still play well and sound fine.Current CDs are expectedto last between 70 to 200 years.Of course, you can make sure your CDs last a long time by taking care of them.
6 Science keeps on developing.It may not be many more years before a completely new technology is invented5 and introduced to the public for music recording.In the meantime, there is no doubt you will continue to enjoy listening to your favorite music on CDs6 and playing your favorite computer games on CD-ROMs.

Paragraphs 1 & 2__________
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

24、Paragraph 3__________
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

25、Paragraph 4__________
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

26、 Paragraph 5__________
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats


27、One advantage of CD-RWs is that they can like floppy disks.
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

28、The author predicts it will not before a new technology is invented for music recording.
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

29、The laser beam-emitting device and the receiver are considered to of a CD player.
A.Digital Code Has Wide Applications
B.Floppy Disks Are Outdated
C.CDs Are Durable
D.CD’s Working Principle Is Explained
E.CD-RWs Play Better Than CD-ROWs
F.CDs Are of Many Formats

30、 Space probes could not without using digital codes.
A.shine on bumps
B.take many more years
C.be the key parts
D.restore the original code
E.be written on and rewritten on
F.keep contact with their ground station efficiently

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