Find some classic examples, copy the method yourself, then find simulation questions and do them in a similar way to improve the speed.
In addition, the first few questions behind the question are also basic questions, so you might as well do a few steps and try to write the process at the back. I believe 130 is not too difficult.
It is best to summarize the method and summarize all the topics.
For example, L: There are three ways to find the reciprocal area of the monotonicity interval of extreme value by using a known function, and I believe you can do it.