That is to say, the question with a score of 150 got a score of 105. If the basic knowledge is good, the grades can still be improved. Personally, mathematics is open, and the same question type can give countless questions. It should be the last semester of senior two, which means that there should be little contact and insufficient practice for the so-called comprehensive questions. Mathematics can be extrapolated, so the best way is to contact more, so solving problems online should be of little use. It is better to do more exercises and let him find his own ideas. The answer is very important. If you can't do the problem, you need to look at the answer, but it is very important to look at the answer meaningfully, depending on what the solution idea of the answer is, where you didn't think of it, and whether you read the wrong book. Personally, I think this is very important. The train of thought is summed up in solving problems. I hope it helps you.