一、引言Internet的出现不但优化了信息环境,而且使信息本身增值。教育工作者越来越清楚地意识到从网上获得信息资源的重要性。因此,如何有效利用Internet网络资源已日益显示出其重要性。在信息社会中,可用于学习的资源无限扩大、异常丰富,学习的内涵和外延得到充分的扩展,学习的任务不再局限于课堂上传授知识,学习的重心转移 I. INTRODUCTION The advent of the Internet not only optimizes the information environment, but also adds value to the information itself. Educators are increasingly aware of the importance of accessing information resources online. Therefore, how to effectively use Internet resources has increasingly shown its importance. In the information society, the available resources for learning are infinitely expanded and unusually rich. The connotation and denotation of learning are fully expanded. The task of learning is no longer confined to imparting knowledge in the classroom and transferring the focus of study