Unit 04-1解析.ppt

下载文档 降价啦

39
0
约8.04千字
约 17页
2017-01-24 发布于湖北
举报
版权申诉
保障服务

Unit 04-1解析.ppt

1、本文档共17页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

* * Unit 4 Operating System Contents Part 1 Reading and Translating Section A: Mobile versus Desktop Operating Systems Section B: Linus Torvalds and the Software Nobody Knows Part 2 Simulated Writing: Meeting Minutes会议纪录 Part 3 Listening and Speaking Dialogue: Choosing a Linux Distribution and Free Trials for Free Software Listening Comprehension: Open Source Software Dictation: Apple Mac OS 林纳斯?托瓦兹（Linus Torvalds） Words on Page 51 cobble together 胡乱拼凑, 匆匆制作 tinker with胡乱地修补，鼓捣 conjunction cellular“蜂窝”无线局域网 NFC: Near Field Communication近场通信 Next Slide Voice Recorders录音机 Section A: Mobile versus Desktop Operating System Section A: Mobile versus Desktop Operating System Notes [1] 近场通信（Near Field Communication, NFC）是一种短距高频的无线电技术，以13.56MHz频率运行于20厘米距离内。其传输速度有106 Kbit/秒、212 Kbit/秒或者424 Kbit/秒三种。目前近场通信已通过成为ISO/IEC IS 18092国际标准、ECMA-340标准与ETSI TS 102 190标准。NFC采用主动和被动两种读取模式。NFC近场通信技术是由非接触式射频识别（RFID）及互联互通技术整合演变而来，在单一芯片上结合感应式读卡器、感应式卡片和点对点的功能，能在短距离内与兼容设备进行识别和数据交换。 Section A: Mobile versus Desktop Operating System Exercises I. Read the following statements carefully, and decide whether they are true (T) or false (F) according to the text. ___1．It is not so important to choose an operating system when you buy a computer or mobile device. ___2．Desktop operating systems are more relevant than mobile operating systems to productivity and multitasking. ___3．In general a mobile operating system has many programs running at a time. ___4．A mobile operating system resides on a hard disk. ___5．Sometimes we call desktop operating system server operating system. Section A: Mobile versus Desktop Operating System II. Choose the best answer to each of the following questions. 1．Which of the following does the desktop operating system include? A．Wi-Fi B．Bluetooth C．Cellular D．None of the above 2．Which of the following technology does the mobile operating system use? A．NFC B．Bluetooth C．GPS D．All of the above 3．Which of the following role does an operating system have? A．It manages ope