Some disadvantages exist in the two way method of dealing with document retrieval and factual data separately and on the contrary the one way method of choosing topics by oneself is good for preparing students to retrieve informations efficiently and to learn on their own initiative.

According to the analysis and research in the architecture of Virtual Organization(VO),which is a basic concept in grid architecture,a concept called Virtual Topic was proposed,based on the search user behavior,and a system framework was constructed based on the analysis in Web user behaviors,which provided the service of Web key resource page orientation.

This paper mainly interprets the theme of nature,the role of emotion & imagination in composing process and the language style of the poem,and establishes that a marked feature of Wordsworth s natural poems is to combine emotion with scenes,feeling and setting happily blended.

The Existential Analysis on the Freedom Theme of Nostromo;

The paper analyzes the effect of the question independent educational model in the ball games curriculum.

The performance of terminal examinations is evaluated according to the self-made examination papers by the students,the self-made examination answers and the rating method,the self-summary reports.