复式班一节课上４０分钟为宜盐池县教研室王瑞有的教师认为：复式班因年级多、教学内容多、教学任务重，一节课用时应在１小时以上。这种提法既不符合国家教委的有关规定，又不科学。笔者认为，复式班一节课还是用４０分钟为宜。尽管复式班年级多、教学内容多，但各年级学... The 40-minute lesson in Duplex class is appropriate for Wang Ruiyou, teacher of Yanchi County Teaching and Research Office. The Duplex class is due to multiple grades, many teaching contents, and heavy teaching tasks. It should be more than one hour for a class. This formulation is not in conformity with the relevant regulations of the State Education Commission and is not scientific. The author believes that it is advisable to use 40 minutes for a class in a dual class. Although there are many classes for multiple classes and many teaching contents, all grades learn...