In the teaching of Probability in senior high school lie obvious inadequacies in students' comprehension of Probability definition for Frequency and Equiprobability models.
在高中概

中,
生对概
的频
定义
典概型的理解存在明显的欠缺。
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The house had been built according to no architectural plan whatever, with extra rooms added where and when it seemed convenient, but, with Ellen's care and attention, it gained a charm that made up for its lack of design.
农场住

按照什么设计图样建筑的,有许多房子
根据需要和方便在
同地方、
同时间陆续增添的。
过,由于爱伦的关注和照官,它形成了自己的迷人之处,从而弥补了设计上的欠缺。
程(第2版)第二册