Manatees (family Trichechidae, genus Trichechus) are large aquatic mammals sometimes known as sea cows. The Trichechidae differ from the Dugongidae in the shape of the skull and the shape of the tail. Manatees' tails are paddle-shaped, while the Dugong's is forked. It is an herbivore, spending most of its time grazing in shallow waters. VII. The Cheetah The Cheetah is an atypical member of the cat family that hunts by speed rather than by stealth or pack tactics. It is the fastest of all terrestrial animals and can reach speeds of up to 110 km/h in short bursts. 【查看更多】
题目列表(包括答案和解析)
Is there any student in your class ________ family is in Beijing?
