I wonder how he teaches students of this major. We are from other colleges. He taught us in his freshman year. I don't know why lectures are always wrong, so I always repeat them. Generally, if you study, you will fail the exam if you don't give money. I have a classmate who listens carefully in every class. The exam should be above 60. He failed because he didn't shoot. He belongs to the teacher who recognizes money, and the appraisal is over!
I hope it will help you more or less ~