LU Feng1, ZHENG Chang-Long2*, ZHAO Hong-Jie3, SHAN Yuan-Yuan2, ZHANG Xiao-Yan2
1. Institute of Teacher Education,Northeast Normal University,Changchun 130024;
2. Institute of Chemistry Education,Northeast Normal University, Changchun 130024, China;
3. Liaoning Normal College, Shenyang 110032, China