No, because the topics in general classes are relatively basic and are set for most students who listen carefully in class. General exercises will be a little more difficult, such as "in-class exercises", which extend to extracurricular activities, but not too much. At most, I thought about it and came out. The competition question is the most difficult of the three, because it is impossible without active thinking, which depends on more practice and accumulation. There are many ways to solve general competition problems, but all of them should be solved in combination with different aspects.