NING Yan-Dan1, WANG Lei1,2, CHEN Ying3, XU Min4, CHEN Song5, SHANG Rong-Rong5
1. College of Chemistry, Beijing Normal University, Beijing 100875, China;
2. Sophisticated Innovation Center for the Future of Education, Beijing Normal University, Beijing 100875, China;
3. Beijing Haidian Teachers Training College, Beijing 100195, China;
4. Beijing Institute of Education Fengtai Branch, Beijing 100072, China;
5. Beijing Fengtai District No.2 Middle School, Beijing 100071, China