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Industrial Revolution 1.0-Age of Steam: It began in Britain in the 1860s, with the invention and application of steam engine as the main symbol. Human society entered "Age of Steam". Human society changed from agricultural handicraft industry to a mode of economic development driven by industry and mechanical manufacturing.Arcade:待春耕的事情做好之后，屯田的同时可以考虑适量征兵。And what Wang Zeduan said about him, Liu Guangyuan, who provided oral memories earlier, He was the only survivor of the four soldiers who had rebuilt the minefield at that time. In the memory just now, He has been blaming himself for running back alone as the first-line witness of that year but failing to save his comrades. At that point, I choked up several times and couldn't speak, and asked that I didn't want to think more about the events of that year. I respected his request, so I didn't urge him to ask, and I didn't record the information about this period of history from Liu Guangyuan's perspective. It was still regrettable from my heart, but fortunately, Wang Zeduan's memory filled the gap to a large extent."The stars in the sky are really beautiful小女娃虽然才十一岁，却很有眼力劲儿，她不让哥哥起来，说出去了更添乱。For a course, check the evaluation, especially pay attention to negative evaluation, what are the deficiencies, and are these deficiencies reasonable? What progress has TA students made and whether they have overcome obstacles in their studies.