The second stage: make some extracurricular materials properly, with moderate difficulty, and the required courses are closely related to the foundation, which is slightly more difficult than the first stage. Mainly to consolidate the test sites and learned knowledge points, and slowly integrate knowledge points;
The third stage: do some difficult questions properly, and remember not to spend too much time and energy on them. Make up lessons for the students who have been squeezed out, that is, we should base ourselves on the foundation and establish confidence!