1, be sure to brush the papers: the typesetting and the quality of the papers are quite good, the answers are more detailed, and there are quite a lot of papers, which are suitable for the sprint stage.

2. The trainer carefully tidied up the final paper: the answer analysis is particularly good, like mathematics, and every step is clearly given, and the topic is well brushed, without so many boxes. You can choose according to your basic knowledge and actual situation.