This subject midterm exam was conducted on this Saturday. For this midterm exam. I realised my own shortcomings. The following is a self-review. First of all, when I was in class, I admitted that I didn’t listen to it completely, so that some of the questions were told by the lecturer that I still do not know how to write. Second, learn to review and ask questions. After reviewing the ppt, you must make a place that you don't know before the class in the next class. In addition, after realising mine deficiencies, there are new plans and remedies. I must listen carefully and actively participate during the class. Record the points that are not on the PPT and summarise them after class. The most important thing is to ask the lecturer if I don't understand.