Simplify the process, you don't have to calculate every question from beginning to end, and you can save a lot of time by using the exclusion reduction to absurdity (with numbers to verify) for multiple-choice questions. Basically, when you look at the options, you have to give the answer; Answer every question as skillfully as possible. After reading the questions, you can know which knowledge point you are taking, or which method you are taking. Save the time for the final comprehensive topic, and the final topic can be thought for a while. Quick thinking, practice makes perfect.