1, the price of required questions is relatively low, and then the questions inside are easier to summarize and the difficulty is relatively simple. If it is for an exam, it is usually recommended to brush the questions. However, for preparing for the senior high school entrance examination, we should pay more attention to improving the quality and comprehensive ability of the subject, so it is best to have Grade 5 or 3.
2. The compulsory questions in junior high school are almost as difficult as those in 53. The use of real questions and classic simulation questions in the senior high school entrance examination is more representative, and the core thinking training questions are not simple, which can be used as promotion and promotion.
The analysis and answers of 3 and 53 are comprehensive and accurate. A very important principle to measure the damage of a teaching aid is to see whether the analysis is accurate and complete.
4. The overall difficulty of the required questions is similar to that of 53, but the individual questions of the required questions will be caught in the ordinary questions, which makes them feel awkward. The analysis is not as clear as five or three points.
The above is just a personal opinion, in a word: what suits you is the best!