Title: 0-6 sui er tong zuo nao kai fa
Description: Ben shu nei rong bao kuo:yu yan xun lian fa zhan hai zi de zuo nao, Shu xue xun lian shi zuo nao kai fa de guan jian, Luo ji tui li ti gao hai zi zuo nao neng li, Chang shi shi zhi li fa zhan de ji chu.
Subjects: Er tong jiao yu, Xue qian jiao yu