读了文 [1 ],获益非浅 ,作者对教材科学性的分析 ,给我留下深刻的印象 .同时我有几点不同看法提出来商榷 .1　教材的重点、难点、关键文 [1 ]认为 ,教材的重点是实现教学目标的关键 ,教学难点是影响教学目标实现的关键因素 (本文的着重号都是笔者加的 ) .这种表达方式也许可作 After reading the article [1], the benefits are very important. The author’s analysis of the scientific nature of the teaching materials left a deep impression on me. At the same time, I have several points of different views to discuss the key points, difficulties, and key texts of the textbooks. [1 ]Thinking that the focus of teaching materials is the key to achieving teaching objectives, teaching difficulties are the key factors affecting the achievement of teaching objectives (the emphasis of this article is the author plus). This expression may be useful