Personally, I think that if we control the problem-solving time within half an hour and fully use our brains within half an hour, we can try different methods to solve it. Don't do it again until it is solved. You can consult a teacher or discuss with your classmates, find out where you are stuck, and carefully study why this is the case.

Give up properly during the exam; For example, you can skip the first question you can do and think carefully after you finish the other questions.

I hope it helps you! I wish the senior high school entrance examination success!