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This article analyses the design and implementation of technology on the on-line test of practice the system, points out overall design and implementation according to practical. This system is divided into two system manager subsystem or student subsystem. The manager subsystem has a user to manage the library, papers, performance management, building management module ; the student subsystem has a custom, randomly, online examination and inquiry, adding modules. This system use B/S the third floor of the framework and the SQLServer2000 .Under ASP. NET the development environment, the use of various C# programming language, ASP. NET the Ajax technology, selecting the smart set of genes to establish an on-line test of practice system meeting the demands of open education. Main functions of a user include: login and practice, custom, online the examination, the library, papers and grades inquiry , meet the basic content and design of the general guiding ideology.The completion of the major work is as follows,Firstly, introduce the background, combine with the development of on-line test system in the word, analysis and present the meaning and value of it. Secondly, study and analysis the key technologies for realizing on-line test of practice system in open education. Analysis the system functions, objectives and performance requirements design the online system of overall framework for the test of practice, divide managers system and students subsystem, made the users login, the library management and practice, online, the examination and inquiry for the functional modules. Finally, studied group of several common question algorithm for an examination system, the focus on the genes algorithm, based on the nature of the number of genes, and intelligent for this system of the topic.
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