In the third grade, our teacher said that the political history of the 20 13 senior high school entrance examination was an open book and should be taken together. Should I write politics or history first? Politics should be combined with the development of today's world, so we should pay attention to current events, that is, news. Then, read more books and remember more knowledge points. 3. What is the basis of the open-book problem, why, how to do it and how to write it. Sometimes the answer to a question will be related to the content of several classes, depending on your thinking ability. History means more memories, which have passed.