First of all: any college entrance examination questions are not based on difficulty, they are all about the knowledge you learned in high school, so the difficulty is not what you need. But the pursuit is only to consolidate and improve the knowledge learned!
Since it is the college entrance examination, we can't avoid the sea tactics. Now that we have reached such a critical moment, I suggest that you do more comprehensive test papers and do them together, so as to ensure that you can finish one in your spare time every day, and then prepare a middle-difficult reference book for senior three (Xue Jinxing, Wang Houxiong, etc. They are all general recommendations, in fact, all the reference books are similar, but these two people may have a reputation), and then prepare an extremely difficult reference book, which you don't need to do often. Sometimes, when the evening self-study is over and the task is completed, I take it out and do a problem. Don't buy thick and thin ones. I have been in senior three for many years, and I don't know much about books. You can look for it in the bookstore. )
Anyway, there are only three kinds of materials: comprehensive papers (you have to buy another set if you finish one quickly, you can't stop, you have to be in line with the comprehensive papers of the college entrance examination); General reference books for preparing for exams; Super difficult information book (don't do too much, it's counterproductive. Because it is difficult to make mistakes easily, making mistakes will have doubts about yourself and affect self-confidence.
All of the above are physical recommendations, and mathematics is similar.