Pre-defense is to defend in the thesis group, show your graduation thesis and PPT to the tutor and the students in the group to judge whether there are any loopholes, and then the tutor will give relevant suggestions and initially put forward some defense questions to prepare for the formal defense.

On the basis of full preparation, it doesn't have to be important, but it must be proud. It is very important to establish certain beliefs and eliminate important panic, because excessive importance will make the questions that can be answered impossible. Only when you are full of pride and calm, can you play well in defense. And pride mainly comes from adequate preparation in advance. When the main respondent asks questions, the students should listen attentively and carefully, write down the answers to the questions in the notebook, carefully scrutinize the key points and quality of the questions raised by the main respondent, and don't answer them in a hurry without knowing the meaning of the questions. If you are not clear about the question, please ask the questioner to say it again. If you don't understand some concepts in the topic,

You can ask the questioner to make some comments, outline his understanding of the topic, and ask if he is sincere, and then reply after getting a certain answer. So as to avoid answering irrelevant questions. The answer is to the point.