Book 1: I personally think that every liberal arts student should have the necessary "senior high school mathematics concept map". If you want to learn math well, you must first understand the basic points. The second book: a series of lectures on hot knowledge of examination questions investigation. The questions in it are the key and difficult points of the college entrance examination. If these difficulties are solved, it is no problem to score above 130 in the college entrance examination. Book 3: If you have both the foundation and the difficulties, I suggest you buy a golden exam paper or a series of books of Hundred Schools Alliance. Personally, I think the quality of the questions is very good, especially suitable for candidates from Liaoning, Jilin, Hainan and Ningxia. Use these simulated test papers to train your answering speed. The most important and crucial thing for students who want to get 140 is to exercise their psychological quality in the examination room.