HOW LONG DOES A DOLPHIN CALF STAY WITH ITS MOTHER

2. - DE KIEM TRA 1 TIET SO 3
Tiếng Anh DE KIEM TRA 1 TIET SO 3

2. How long does a dolphin calf stay with its mother ?

A. 2 years B. 40 years C. 3 - 6 years D. 30 years