使用计算机的无纸化考试在逐渐取代纸质的考试,这是近年来计算机研究领域的一个非常活跃的分支。无纸化考试系统是一个深化教学改革,推进学校教学创新,使考试更加公平公正的重要平台。在现代多媒体教学过程中,基于多学科通用试题库的构建,及其应用软件的设计、开发,将成现代化教学手段的一个重要发展方向。多学科通用试题库的构建,使得多学科的综合抽题组卷处理成为可能。本文介绍了利用遗传算法实现了随机抽题的功能;系统地阐述了实现过程和关键技术 Paperless exams using computers are gradually replacing paper-based exams, a very active branch of computer science in recent years. The paperless examination system is an important platform for deepening teaching reform, promoting teaching innovation in schools and making exams more fair and just. In the process of modern multimedia teaching, the construction of multidisciplinary generic question bank and the design and development of its application software will become an important development direction of modern teaching methods. The construction of multidisciplinary generic question bank makes it possible to deal with multidisciplinary comprehensive question and answer sets. This paper introduces the use of genetic algorithms to achieve random extraction of the function; systematically elaborated the realization process and key technologies