1. If you want to change your major, you can take calculus courses directly instead of taking classes. Yang Hao's calculus is the most popular in our school, and Luo's is also good. Mr Yang Hao's class is very popular. If you want to sit in the front row, you must sit in advance. In fact, mathematics is also very easy to learn, and self-study can also be done. Some friends I know have succeeded in learning mathematics through self-study and changing majors.

2. Which department has a high success rate? You should judge for yourself. After the examination of changing majors, the school will issue a notice that majors accept changing majors. You can decide according to the quota above. The most important thing is that the actual number of people will be more than the planned number, and it is difficult for us students to judge how much more. The probability of success in changing from a major with a large number of people to a major with a small number of people is higher, except for majors such as finance and accounting.

3. Generally speaking, this qualification for changing majors is only 10% before the first semester. However, I heard that many majors are willing to change majors, as long as they want to participate.

4. I need it during the interview, but I don't need any cardholder links. The key is to pass the written test. The chances of that kind of interview being brushed off are very small.