Unit 10 Applications【教学目的】○ Learn about the English terms of Applications: boot，click，notebook，ASP，backup，CD-R，CD-RW and etc.○ Improve the students’ ability to understand the long and difficult sentences in the text.○ Master the key language poi nts and grammatical structures in the text.○ consolidate the technical terms and important professional phrases by doing exercises. 【教学重点难点】○Important technical terms:boot（启动），click（点击），notebook（笔记本电脑），ASP（动态服务器主页），backup （备份），CD-R（可写光盘），CD-RW（可改写光盘），DVD（数字化视频光盘），clipboard （剪贴板），compression（压缩），default setting（默认设置），icon（图标），password（密码），virus（病毒），MPEG （运动图像专家组），OCR（光学字符识别软件），extension（扩展名），cookie（小甜饼），applet（小Java程序），DSL (数字用户线路)○ Difficult sentences:1. Usually used as a marketing term to describe a Web site that is or is intended to be the first place people see when using the Web.2. A computer on the same network as an infected computer or that uses an infected disk (even a floppy) or that downloads and runs an infected program can itself become infected.3. Note also that different platforms have different general levels of resistance; UNIX machines are almost immune, Win ’95 / ’98 / ME is quite vulnerable, and most others lie somewhere in between.4. MPEGA family of multimedia standards developed by the Motion Picture Experts Group, commonly used to refer to audio or visual files saved with MPEG compression schemes.5. EncryptionA process that turns files into gobbledegook so that they cannot be read, other than by programs containing the appropriate password-protected encryption software.6. Applets differ from full-fledged Java applications in that they are not allowed to access certain resources on the local computer, such as files and serial devices (modems, printers, etc.), and are prohibited from communicating with most other computers across a network.7. A common configuration of DSL allows downloads at speeds of up to 1.544 megabits (not megabytes) per second, and uploads at speeds of 128 kilobits per second. This arrangement is called ADSL: Asymmetric Digital Subscriber Line.○ Review the important points of essential Englishwill表示“通常会……”by defaulthave uses for ……【教学步骤】Step OneRead and explain Text A to the students and ask the students to keep in mind the following professional terms:boot（启动）：Starting up an OS is booting it.click（点击）：To press a mouse button.notebook（笔记本电脑）：A notebook is a small laptop with similar price, performance, and battery life.ASP（动态服务器主页）：Active Server Pagesbackup（备份）：To make a second copy of a file as a safety measure.CD-R（可写光盘）：Compact DiskCD-RW（可改写光盘）：Compact Disc Re-Writable formatDVD（数字化视频光盘）：Digital Video Diskclipboard（剪贴板）：A section of a co mputer’s memory where you can temporarily copy chunks of text, data, graphics, or pictures.compression（压缩）：A technique to reduce the size of a file in order to make it more manageable and quicker to download.default setting（默认设置）：The computer or software settings made by the manufacturer. icon（图标）：A small picture displayed on-screen to identify a command or file.password（密码）：A code used to gain access (login) to a locked system.virus（病毒）：A virus is a program that will seek to duplicate itself in memory and on disks, but in a subtle way that will not immediately be noticed.MPEG （运动图像专家组）：Motion Picture Experts GroupOCR（光学字符识别软件）：Optical Character Recognition.CSS（层次式样表）：Cascading style sheetsextensions（扩展名）：Files are identified by a three -letter or -number code, called an extension. cookie（小甜饼）：A cookie is a small file that a web page on another machine writes to your personal machine’s disk to store various bits of information.applet（小Java程序）：A small Java program that can be embedded in an HTML page.DSL (数字用户线路)：Digital Subscriber LineStep TwoHelp the students to analyze the following long difficult sentences:ually used as a marketing term to describe a Web site that is or is intended to be the firstplace people see when using the Web.本句解释portal。

portal原义：a large and often highly decorated entrance to a building “一幢建筑高大而带有装饰的入口处”，到了网络，其意思是：a site that the owner positions as an entrance to other sites on the internet被译作“门户网站”。

used as a marketing term“用作推销术语”；to describe a Web site that is or is intended to be the first place people see when using the Web.“把网站描述成访问网络时的首站”，全句的参考译文可以是：“portal为门户网站，通常为销售术语，描述一个网站是或打算成为人们上网时最先到的地方”。

告诫学生不要与portable（便携的）混淆，两者非同根词，毫无意思相连。

2. A computer on the same network as an infected computer or that uses an infected disk (even a floppy) or that downloads and runs an infected program can itself become infected.本句讲了一台计算机遇到三种情况自己就会感染病毒，主干句子为A computer can itself become infected。