There is no doubt that the topics of May 3rd are complete, but there are also many, especially the B version. There are some real questions in this edition, and the answers are very detailed at first glance, but some formulas are extended and may not be taught in class. Therefore, this edition of exercises is suitable for students above middle school who have a certain understanding of the extended formula. There is also a lot of practice, and there is absolutely no time to finish it. So I suggest you use A, and spend enough time thoroughly understanding the textbook. 70% of the basic college entrance examination questions are in books. I hope my suggestion is of reference value to you.