“梦”的启示云南师范大学五华实验中学特级教师丁继华日有所思，夜有所梦。在１８５９年２９岁的德国化学家凯库勒在世界上首先确立了碳原子的四价理论和碳链学说，又在１８６５年凭借其具有的建筑师的丰富经验和空间想象力“一梦成功”，提出了苯分子为环状结构的理论，... The Enlightenment of “Dream” Ding Jihua, a special teacher at Wuhua Experimental High School of Yunnan Normal University, ponders day and night and dreams. In 1859, the 29-year-old German chemist Kekule first established the theory of tetravalent carbon atoms and carbon chain theory in the world. In 1865, with the rich experience and spatial imagination of his architect, “a dream was successful. ”, put forward the theory that the benzene molecule is a ring structure,...