Internet 是一个无级网络,人人都可参与;网上的信息资源分布在世界各地的数千万台计算机上,所以不可否认,它是迄今为止人类所建筑的最为壮观的信息库。理论上说,每位用户都可以方便地享用这些资源和各种服务:与计算机专家交朋友、查询信息、发布广告、了解股市行情、与不同国家的用户对话交流……然而在中国使用 Internet 却还存在一些困难和问题。 The Internet is a stepless network where everyone can participate; online information resources are distributed on tens of millions of computers around the world, so it is undeniable that it is by far the most spectacular repository of information ever constructed by mankind. In theory, every user has easy access to these resources and services: making friends with computer experts, querying information, advertising, stock market quotations, talking to users from different countries ... However, Internet use in China There are still some difficulties and problems.