The thinking process of filling in the blanks should not exceed 30 seconds, and there is no idea of skipping for 30 seconds. After completing all the choices, fill in the blanks and then go back and think about the questions that you can't. Compare the first four big questions, think for two minutes, skip for two minutes, and think back when the last two big questions are left. Think about the last two big questions for five minutes. Most people can solve the first question or the first two questions. The last question will not be given up decisively. Check the previous one.