Excuse me, are you asking the question "Changchun junior high school math preview paper is good"? The city's junior high school math preview papers can be used in the subject network, Lele classroom and Baidu library. 1. Subject Network: Changchun Junior High School Mathematics Preparation Subject Network, which provides a large number of junior high school mathematics test papers in Changchun, including mid-term test papers, final test papers and joint school test questions. , covering different grades and different topics.

2. Lele Classroom: The platform also provides some junior high school math final papers in Changchun City, Jilin Province, and supports downloading high-definition papers in pdf files and explanations by famous teachers.

3. Baidu Library: This platform provides analysis of the 2022 senior high school entrance examination papers in Changchun City, Jilin Province, which can be used as a reference for preview and review.