1980年3月,刘默耕先生在北京市自然教学研究成立大会的祝词中说:“从事小学自然教学的同志们要明确我们的历史责任,应当担当起重大的历史责任,真正脚踏实地地进行研究,怎样使我们的自然学科在现代化建设中起到它应有的作用,尽到它应尽的历史责任。”二十年过去了,刘默耕先生和他的同志们不辱使命,以真正脚踏实地的工作作风和实事求是的科学精 In March 1980, Mr. Liu Mogeng said in his message of the inaugural meeting of the Natural Science Research and Education Commission in Beijing: “Comrades engaged in natural teaching at primary schools should clearly define our historical responsibility and assume a great historical responsibility to carry out truly down-to-earth research and how So that our natural sciences can play its due role in the modernization drive and fulfill its historic responsibility. ”Twenty years later, Mr. Liu Menggeng and his comrades have done their job in a down-to-earth manner And the scientific spirit of seeking truth from facts