Thinking: 1, explain what historical materialism is, that is, what characteristics and development process historical materialism has, which can be expanded to clarify the difference between materialism and idealism, and the difference between historical materialism and metaphysics.

2. Explain the change of historical view in the process of growing up. For example, when I was a child, I was idealistic. I analyzed why it was an idealistic view of history at that time, and then I began to change into a metaphysical view of history after receiving some ideological education. It was not until I accepted Marxism systematically that I strengthened my belief in it and established a historical materialism. The historical view of each stage can be analyzed by borrowing the characteristics of various historical views expounded in the first part.

3. The old school thanked the country for the opportunity to receive education and the teachers for their careful teaching.