I am a junior high school student. I wonder how old the questioner is.

Generally speaking, this is a complete solution for textbooks (Xue Jinxing). And Wang Houxiong's lesson plans. Meng Jianping Olympic Mathematics Lectures and Examination Papers (Supporting)

In practice, top students, experimental classes, class training and class special training are all better. Compared with the experimental class, there may be more Olympic math topics.