I feel that when doing probability questions, we should first look at the questions slowly and try to collect the information in the questions. Be sure to know the meaning of the question, so as to do the probability question clearly.

I choose organic chemistry. If you want to learn organic well, you must be familiar with the reaction types of various substances in organic chemistry, and pay special attention to the reaction conditions instead of "= =". Before doing organic problems, you should look at the tips at the back, which can often be used as a breakthrough. When doing organic problems, you should be good at "pushing in the middle" and "pushing back".

I hope it helps you.

Personal opinions are by no means sticky!