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《生物》教材是目前生物学教学的主要媒体，教学内容要以教材为依据，但又不能完全受教材束缚，教材中的不少内容需要横向拓宽，纵向加深。本文就高中《生物》教材内容的深化问题谈几点做法。一、拓展教材中的一些重点叙述教材中的文字叙述是经过多年的锤炼，反复修订而成的，
“Biology” textbooks are currently the main medium for biology teaching. Teaching contents should be based on teaching materials, but they cannot be completely bound by the teaching materials. Many of the contents of textbooks need to be widened horizontally and vertically. This article discusses several ways to deepen the content of high school “biology” textbooks. First, the text narratives in some key narrative textbooks are developed after many years of tempering and are repeatedly revised.