The purpose of opening the book is to reduce the difficulty of the exam, but even so, it actually increases the difficulty of the exam, that is, in the production of the topic, you will not copy it, and you need to use your own thinking ability to solve the problem on the basis of being familiar with the book. So the significance lies in examining students' thinking ability.

How to deal with the open-book exam: since it is an open-book exam, and there must be something you want in the book, the last thing is to be familiar with the book. So the most commonly used method is "indexing". There are many ways to establish an index, and the common ones are the white paper method (writing the number of pages on a single sheet of paper) and the label method (putting various labels on the side of the book). The purpose is to find what you want quickly. Therefore, the usual steps are: first browse the catalogue and find the place you think is important. Read more books and get to know about it. Rebuild the index. Basically, it will do.

Literature and history: Literature and history exams such as Ma Yuan and Shi Gang. This kind of examination focuses on "the original words in the book", so it is necessary to focus on establishing an index. Be sure to be familiar with your own indicators before the exam, especially according to the previous information (such as the teacher's drawing or the focus of the last exam).

Science and engineering: science and engineering are mainly based on calculation. Therefore, the most important thing is to be able to calculate. If you just put it before the exam, it is not easy to do this and you need to work hard at ordinary times. In fact, what you usually have to do is also very simple: 1. Listen to lectures in class and play less mobile phones. If you didn't do your homework, at least find someone to copy the answers afterwards, and pay attention to the familiar questions when copying. Basically, we have a pretty good idea of how to calculate these two points. When building an index, besides finding key definitions, we should also pay attention to "important examples". The topics and examples of the general examination are not far apart, and the examination room is mainly gourd painting gourd ladle. So be sure to understand the examples. At the same time, remember to copy down the examples that the teacher said in class and were not in the book.