【正文】 s out there. Maybe some people may argue that there is a risk reward ratio here and for us the reward is so great that whatever the risk is we try and contain it and understand it. We all want something for nothing: The tools are very pelling and powerful. but we39。s out there, it moves, and you can39。s gift es at a price. We pay in a modity perhaps more precious than gold with intimate information about ourselves. How much would you charge to let a stranger read your personal diary? How much would it cost them to find that your religious, political or sexual preferences? Or, where your children go to school? More than money can buy. But we give away exactly this kind of information routinely every day and we are doing it on an enormous scale. The thoughts and desires we express on the Web may be traced, tracked and traded in pursuit of profit. (Actually, the free is an illusion. Every month, Google gathers billions of search terms that help them refine their search system and sell highly targeted advertising. Every day, Flickr receives 3 million pictures or videos next to which they can place advertising. Every month, some blogs allow advertising panies to plant a tracking device known euphemistically as a cookie on our puters that reveal our interests to mercial works, so they can send us more relevant web advertising.) We are being judged as we walk around the inter by who the cookies say we are and who we declare we are by our Facebook profile or what information we put into what website we might go to. Digital information39。s suitable for a Chinese university class. Borrowing revolutionary educational methods from abroad without adapting them to the situation in China can lead to problems. Virtual Web demerits(virtual marriage, love, friendship, contacts)give away personal information (vs: free of charge and romantic and tools are pelling and powerful and the web is trustworthy) 20 years after its creation, the World Wide Web offers us unprecedented free access to information. It seems we read news for free, we do searches for free, and we connect with friends and family for free.(In a month, users around the world make about 76 billion searches on Google for free. In a day, we post up 3 million pictures and videos to show with friends on Flickr for free. In a month, an estimated 350 million of us browse through the world39。 real needs. 3. Just because the assignment was used at a US college doesn39。s health, however, the harm is exaggerated. Actually, as long as he smokes in moderation, there will be little harm. We know that both Churchill and Deng Xiaoping are heavy smokers, still they enjoy a long life expectancy. is inappropriate. 2. There are better ways to stimulate students39。s revenue. For example, British collected a large sum of money form them and gave a big support to schools. Those who strongly approve of the ban lay too much emphasis on the rights of nonsmokers. They ignore the smokers39。s grasp, and they are playing a more important role in the society. However, no invention has received more praise and abuse than puters/Inter, because they are not without problems. Indeed, they have limitations. In other words, they are not so powerful that could replace . The notorious virus is one of the . Since people can easily pretend their identities in the Inter, the information online bees illusive and untrustworthy. Looking back on the history, it39。s gain. With too many talents working as civil servants, society will lack the proper quantity and quality of human resources. In order to cool down the heat of civil servants exam, government may reduce surplus personnel and benefits, and make civil servants a vocation rather than a career, to encourage talents to be i