And this mistake shows that you don't have enough test-taking experience. Don't mention the problem of doing wrong questions, you will be in a mess with five multiple-choice questions, and you won't do them when you encounter problems in the college entrance examination. Didn't you immediately collapse? If you can't undo the mistakes that have happened, don't look back. Try to make it up elsewhere. Life is the same as exams. Don't look back, look forward. Tomorrow's math exam not only can't fail, but also try to find the lost scores in the math exam.
For the rest of the month, do at least one math problem every day, and try to make both advanced and low-level mistakes before the college entrance examination. You can't make such a mistake in the college entrance examination.