Why does the shark never stop moving?A.It never sleeps.B.It can only smell when moving.C.I
公共英语
已帮助 人
Why does the shark never stop moving?
A.It never sleeps.
B.It can only smell when moving.
C.If stopped it would sink.
D.It must eat constantly.
热搜:m受体兴奋可产生哪些效应
