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　　网络审查的必要性

　　The Internet offers a huge wealth of information both good and bad. Unfortunately, the very nature of the Internet makes policing this new domain practically impossible. The Internet began as a small university network in the United States and has blossomed into a vast telecommunications network spanning the globe. Today the Internet is ruled by no governing body and it is an open society for ideas to be developed and shared in. Unfortunately every society has its seedy underside and the Internet is no exception.

　　11 信息时代带来的变化

　　In the Information Age, it?s easy to forget that just 10 years ago, the Information Age was stuck on its launching pad. The Internet was unknown to nearly everyone except university researchers; TV was still patting itself on the back over cable success; films were searching for the next big thing; music was sold at record stores. Now, television and computers are colliding and millions of channels are on the horizon; films are bigger, clearer and cheaper to make; and music, more than any other industry, is using the Internet to market itself. HDTV will soon be rolling into homes, delivering a wider screen and digital picture. Television is on the brink of major changes that may forever alter the way we live. It should all happen with the inevitable switch from analog to digital technology. The world of television and entertainment is poised for explosion, and that explosion comes about because television becomes digital. It?s one of the premiere technology think tanks in the world.

　　17 技术对社会和环境的影响

　　Technology has affected society and its surroundings in a number of ways. In many societies, technology has helped develop more advanced economies (including today?s global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the earth and its environment. Various implementations of technology influence the values of a society and new technology often raises new ethical questions. Examples include the rise of the notion of ficiency in terms of human productivity, a term originally applied only to machines, and the challenge of traditional norms

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