All right. According to the relevant public information, "Loose-leaf Testing: Mathematics (RJ Edition, Grade 9)" has an exercise in each class, and each exercise has a score, which is equivalent to a mini-test paper. It can feed back the classroom teaching effect in time and help students consolidate the double foundation. Topic materials should adapt to students' life reality and the spirit of the times, fully stimulate students' interest in learning, and improve students' ability to solve practical problems by using what they have learned.