waves, pulse of light
3. telephone lines, coaxial cables, microwave systems, satellites systems, fiber optic
cables 4. telephone lines 5. networks 6. atmosphere 7. microwave tower
8. gigahertz 9. digital 10. light
[Ex 3] A. 1. B 2. D 3. F 4. G 5. A 6. C 7. E 8. H
B. 1. noise 2. transmission 3. Fiber optics 4. Microwave 5.
sychronous
6. optical media 7. Coaxial cable 8. digits
[Ex 4] 1. communicate 2. revolves 3. detect 4. encrypted 5. nonconductive
6. frequency 7. susceptible 8. relayed 9. antenna 10. Pulses [Ex 5]
Smartphone
To really understand what a smartphone is (and is not), we should start with a history lesson. In the beginning, there were cell phones and personal digital assistants (or PDAs). Cell phones were used for making calls--and not much else--while PDAs, like the Palm Pilot, were used as personal, portable organizers. A PDA could store your contact info and a to-do list, and could sync with your computer.
Eventually, PDAs gained wireless connectivity and were able to send and receive e-mail. Cell phones, meanwhile, gained messaging capabilities, too. PDAs then added cellular phone features, while cell phones added more PDA-like (and even computer-like) features. The result was the smartphone.
智能手机
要真正理解什么是智能手机，什么不是智能手机，我们应该从了解历史开始。起初人们使用手机和个人数字助理。手机只是用来打电话，而数字助理，如掌上电脑，是个人便携式的记事本。一台个人数字助理能储存你的联系信息以及将要处理的事情，可以和电脑同步。
最终，个人数字助理开始了无线连接，能够发送和接收电子邮件，而手机也具备了获取信息的能力。个人数字助理添加手机功能，手机也增添个人数字助理（甚至计算机）的特性，其结果就是智能手机。
[Ex. 6] 1. F 2. F 3. T 4. F 5. F 6. F 7. T 8. F 9. T 10. T 11. T 12. T Unit 10
[Ex 1] 1. F 2. T 3. T 4. F 5. T 6. T 7. T 8. F 9. F 10. T 11. F 12. T
13. F 14. F 15. T 16. F 17. T 18. F 19. T 20. T
[Ex 2] 1. download, contract/infect 2. macros 3. viruses 4. timer 5. client
6. recognize 7. reformat 8. back up
[Ex 3] A. 1. B 2. E 3. F 4. A 5. C 6. G 7. D 8. H
B. 1. informative 2. programmed/is programming等 3. responsive
4. attachment 5. chat group 6. The bottom line 7. inoperabl
8. is scanned
[Ex 4] 1. has rendered 2. embedded 3. update 4. are contracted 5. wired
6. theorized 7. replicate 8. activated [Ex 5] 1. C 2. G 3. A 4. F 5. H 6. B 7. E 8. D
[Ex 6] 1. F 2. T 3. F 4. T 5. T 6. T 7. F 8. F 9. T 10. F 11.
F 12. T 13. F 14. F 15. F 16. F 17. T 18. T 19. F 20. F 21. T 22. T 23. T 24. T 25. F 26. F
Unit 11
[Ex.1] 1. T 2. T 3. F 4. F 5. T 6. T 7. F 8. T 9. T 10. T 11. F 12. F 13. F 14. T 15. T 16. T 17. T 18. T 19. F 20.F
[Ex 2] 1. HTML, the hypertext markup language 2. components 3. ASCII files
4. markup tags 5. webmaster 6. Heads, tables, paragraphs,
lists 7. tags
8. slash 9. case sensitive 10. required 11. View Source
12. template 13. carriage returns, spaces, linefeeds 14. source
[Ex 3] A. 1. C 2. D 3. H 4. F 5. E 6. B 7. A 8. G
B. 1. bookmark 2. browsers 3. primer 4. HTML
5. link 6. servers 7. webmaster 8. Search
Engines [Ex. 4]
1. 用超文本标识语言创建文档 2. 为网络创建文件 3. 文档类型定义
4. 独立平台风格 5. 网络服务器 6. 局域视图模式
7. 超文本标识语言版本 8. 超文本标识语言文档 9. 纯文本文件
10. 文本编辑器 11. 行符的文本
13. 超文本编辑器 14. 处理器
16. 使自己的文件登录上网 17. 费上因特网
19. 本地因特网供应商 20. 21. 用超文本标识符标志文件要素 22. 符名
24. 右尖括号 25. 符指令
26. 图片源文件超文本标识符 27. 架文档
29. 一个样式文件 30. 源文件
31. 带有超文本语言标识符的源文件文字处理软件 12. 带分超文本标识符的基本知识 15. 文字局域网 18. 提供免免费将文件登录服务器
左尖括号 23. 标识标识计较大小写/键盘上下档 28. 纯骨查看超文本语言编码信息 33. 文件
32. 扩展名
34. 全球背景 35. 大号字或/和粗体字 36. 回车 37. 单词移行 38. 回行 [Ex 5]
What does HTML stand for?
HTML is an abbreviation of \already more than you need to know at this stage. However, for the sake of good order, let us explain in greater detail.
Hyper is the opposite of linear. In the good old days - when a mouse was something the cat chased - computer programs ran linearly: when the program had executed one action it went to the next line and after that, the next line and so on. But HTML is different - you can go wherever you want and whenever you want. For example, it is not necessary to visit MSN.com before you visit HTML.net.
? ?
?
Text is self-explanatory.
Mark-up is what you do with the text. You are marking up the text the same way you do in a text editing program with headings, bullets and bold text and so on.
?
Language is what HTML is. It uses many English words.
HTML代表什么？
HTML是HyperText Mark-up Language（超文本表示语言）的缩写形式，这超
计算机专业英语教程第四版习题答案
