教师必须学会在教学中不断变换角色,一切为了学生着想,一切服务于学生,抓住一切机会挖掘学生的潜力,使他们能够在丰富多彩的化学世界里尽情地遨游。 Teachers must learn to constantly change their roles in teaching. For the sake of their students, they all serve their students and seize every opportunity to tap the potential of students so that they can enjoy themselves in the rich and colorful chemistry world.