Some of the senior high school entrance examination classes are reliable, and some are not. In fact, the mid-term exam questions can't be suppressed. On the one hand, those classes are to reassure themselves, on the other hand, they are to practice more.

The math problem in the senior high school entrance examination won't be difficult. After mastering the basic knowledge, do more kinds of questions. Skillfully practice those kinds of questions, even if you encounter problems that you can't, you can write them slowly according to your own ideas.

Therefore, if you have time, you can take this kind of class, but not for the purpose of betting on the topic, but for practicing listening problem-solving methods.