Unit 3 The world online 网络，一个科技发展的产物，也是信息时代的标志。它的出现改变了人们传统的思想方法，在我们的生活中给予了我们极大的帮助，同时也受到越来越多的青少年的青睐。 The Positive Effects of the Internet The Internet has come a very long way in the past 50 years. New innovations such as integrated software and hardware have changed the way that people view and obtain information today. Millions of people worldwide are using the Internet to share information, make new associations and communicate. Individuals and businesses, from students and journalists, to consultants, programmers and corporate giants are all harnessing the power of the Internet. For many businesses, the Internet is becoming an integral(必须的) part of their operations. Perhaps, the most important facts about the Internet are that it contains a wealth of information, which can be sent across the world almost instantly, and that it can unite people in wildly different locations as if they were next to each other. The information available is vast and varied. The Internet gives consumers the ability to shop smarter, to find the best products at the right prices. The Internet brings people together. People of like minds and interests can share information with one another through electronic mail and chat rooms. Mailing?list discussion groups and online conferencing allow us to gather together to work on a multitude of projects that are interesting or helpful to us. There are many school?based networks that link learners to discuss, share and examine specific subjects such as environmental concerns, science, local and global issues, or to enhance written communication skills in first or second language proficiency(精通) activities. Online education introduces unprecedented options for teaching, learning, and knowledge building. Today access to a microcomputer, modem, telephone line, and communication program offers learners and teachers the possibility of interactions that transcended the boundaries of time and space. E?mail is enabling radically new forms of worldwide human collaboration. Therefore there could be no prejudices(成见) against a person who is using the Internet. Section Ⅰ Welcome to the unit & Reading—Warming Up 1．statistics n．(pl.) 统计数字，统计数据，统计资料 2．address vt. 探讨，解决，处理；向……说话；称呼(某人) 3．false adj. 虚假的，伪造的；错误的； 人造的 4．withdraw vi.& vt. 脱离(社会)，不与人交往；撤回； 取(款) 5．alarm vt. 使担心，使害怕，使警觉 n. 警报(器)；惊慌；闹钟 6．conference n. (大型的正式)会议，研讨会 7．explicit adj. 直言的，坦率的；清楚明白的， 易懂的 8．abundant adj.大量的，充裕的→abundance n．丰富，充裕 9．command n．命令；控制；掌握vt.命令；指挥；控制→commander n．负责人；司令官，指挥官 10．assumption n．假定，假设→assume vt.假定，假设→assumed adj.假定的；假装的 11．diverse adj.多种多样的，形形色色的→diversion n．转向；转移；偏离→diversify vt.使多样化；使变化→diversified adj.多样化的；多种多样的 12．correspond vi.通信；相一 ... ...
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