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随着新一轮课程改革的不断深人和国培工作的开展,新课程初中生物学教材已在各实验区域使用多年。北师大版生物学教材集科学性、趣味性、实用性于一体,尤其是丰富多彩的教材插图,更是生动、形象地展示了生物王国的各种奥秘,备受师生的欢迎。一、疑惑现行北师大版《生物学》新教材其权威性和科学性不容置疑,但在八年级下册的第22章,讲不同动物类群之间的进化关系时,在第49页上用了教材插图“动物进化系统树”(见图1)来揭示动物不同类群之间的进化关系。
With the continuous deepening of the new round of curriculum reform and the development of national training, the new course of junior high school biology teaching materials has been used in many experimental areas for many years. Beijing Normal University version of biology textbook science, fun, practical in one, especially the colorful textbook illustrations, but also vivid, vividly shows the various creatures of the Kingdom of Biology, much welcomed by teachers and students. First, the doubts Existing Beijing Normal University version of “Biology” new textbook of its authority and scientific no doubt, but in the eighth grade eighth volume Chapter 22, talking about the evolutionary relationship between different animal groups, on page 49 Use the textbook illustration “Animal Evolution System Tree” (see Figure 1) to reveal the evolutionary relationships among different groups of animals.