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“碳族元素”的知识内容比较杂散,在教材中起着承前启后的作用.为了有利于学生学好本章,现归纳本章要点知识,并附加相应经典例
The “Carbon Elements” knowledge content is relatively spurious and plays a role in teaching materials. In order to help students learn this chapter, we now summarize the main points of this chapter, and add corresponding classic examples.