First of all, most of the text in this book lies in the enlightenment of mathematical thinking and inspires your mathematical ability. As the name implies, the textbook learning plan is almost an interpretation of the textbook, which is basically a dead routine. It is totally unacceptable for her to do what she does in the textbook and then give you a few divergent questions to do.

The above two books have their own merits and strong pertinence, but they are not as good as 53. Although the word "53" has little impact on this aspect of mathematical thinking, it is expensive in the topic, and the answers behind it are fully interpreted (with process). Although the Ministry of Education now calls for quality education, few people really engage in this practice, and even fewer are successful. So let's change the form. The sea tactics are really abandoned, but the number of questions is also reduced. Moreover, it is very common to see many problems in the world now, so sometimes you will feel that it is impossible to do less. Reading 53 is both college entrance examination questions and college entrance examination level questions, which helps to adapt to the questions and answers of college entrance examination. And the number of 53 questions is definitely enough to practice. Basically, more than half of the papers will be done when you get them (methods, don't say what I just said is wrong, there will be ways to do more questions). What are you afraid of? Mathematics 140 is common if you do it carefully.