A:教育功能
B:保护功能
C:经济功能
D:赡养功能
Read and choose.(读一读,选一选。)
____
A. Hello! I'm Mike, I'm a student.
B. Good morning, boys and girls. I'm your teacher.
C. Hi! I'm a boy, I'm from America.
D. Hello! I'm Chen jie and I'm a girl.