【简答题】听下面一段对话,完成第1至3题。 1. When was the Great Barrier Reef Marine Park established? A. In 1975. B. In 1985. C. In 1995. 2. How long does it stretch? A. 1,500 km. B. More than 1,800 km. C. More than 2,300 km....
【简答题】A.They are social marine animals. B.They call for help when they are in er. C.They hunt food alone and independently. D.They immigrant between the Antarctic and Australia.