The school teacher is a decoration. Forget it. I don't complain much. I am a senior three student. Share some knowledge. I am a headmaster.
At the beginning of the second round, the focus of multiple-choice questions is on doing the questions, rather than listening to the teacher. Usually, if he makes it clear, you won't do it again. All questions should be understood before you speak. Ask in advance if you don't understand, and don't attend class. A group of people shouted after the teacher.
Based on your question, I define you as the second line of mathematics. My advice to you is 1 1+ 3+4+2.
It is 5515461127, which gives you a partial fault tolerance rate in the middle, and a line is about 100.
Although the second round advocates overcoming the problems put down before. But I want to say that the degree is poor. There is no need to miss the previous simple question. You have worked out 12 16. And to do all the questions I said above, except the first question 2 1 20, sometimes there may be impossible questions, and the so-called questions of the other questions must be mastered.
12 16 takes the same time as 1 1 8 10 9, focusing on mastering the methods of not panicking and excluding special values.
Don't brush off the questions, calm down and don't sit still. When you have done enough questions, you will naturally go up. I only got 1 13 in math because I chose three wrong ones, 20 2 1, all wrong.