复习是人类学习发展中一个不可缺少的重要环节。从实践看 ,复习至少应该有以下几方面的功能 :一是巩固知识的功能。经过复习可以减少遗忘 ,使学过的知识得以保持。二是系统化功能。把知识条理化、系统化是复习的重要任务之一 ,因此 ,复习能优化学习者的知识结构。三是促进迁移 Reviewing is an indispensable and important link in the development of human learning. From a practical point of view, review should have at least the following aspects: First, to consolidate the function of knowledge. After review can reduce the forgotten, so learned knowledge can be maintained. Second, systematic function. Striking and systematizing knowledge is one of the most important tasks for review. Therefore, review can optimize learners' knowledge structure. The third is to promote migration