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在多年的高中化学教学中发现,许多学生对“极性共价键和非极性共价键”、“极性分子和非极性分子”四个概念不能准确地理解和应用。若要掌握这四个概念,可以
After many years of high school chemistry teaching, many students can not accurately understand and apply the four concepts of “polar covalent bond and non-polar covalent bond”, “polar molecule and non-polar molecule” . To master these four concepts, you can