You have a good chance to study undergraduate. Of course, even if there is a simple topic, you don't understand it. I can only say that I didn't review well. I don't have to think too much about the rest of the time. Just review. Now you can get through the second half of the year soon. By the way, I wish you success in the college entrance examination If you are a candidate in Guangdong this year, you may face a very difficult problem. You should work harder yourself!