For multiple-choice questions, students should tell why the unselected options don't meet the meaning of the question. For material analysis questions, they should draw out key words, such as time, place, people, events, reasons, contents, effects, how to do it, or what enlightenment it has for the future. It is very important to use the chronological method in history. When you see a problem, you should think of age, a series of factors, and so on.