If your daughter's academic performance is good and she is familiar with the basic knowledge, and she wants to choose a slightly more difficult book, she can choose "Top Students' Learning Plan", which is an explanatory supplementary book for exams. It mainly talks about what the teacher said in class, but the students failed to master it well, as well as the knowledge points that students often take in exams, the knowledge points that are easy to make mistakes in exams, and the key and difficult points. In addition, there are corresponding supporting exercises and classics.