<b>How does 'double reduction' achieve a win-win situation?</b>
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资源简介：
The data was collected from 112 schools in 28 randomly selected county-level units across the country, with all students in the selected classes included in the survey. The study focuses on adolescents who were tracked from seventh grade to eighth grade. After merging the cross-sectional and longitudinal data and handling missing values, a final sample of 5,797 tracking study samples was obtained.
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Lie, Zhao创建时间：
2025-04-01
