摘要
Scientists since Aristotle’s day have wondered why the tongues of snakes and many lizards——are forked, a trait that dates from at least the Cretaceous,more than 65 million years ago.Now Kurt Schwenk,a University of Connecticut evolutionary biologist, thinks he knows the answer. "It gives them the abil-
出处
《当代外语研究》
1995年第7期19-19,共1页
Contemporary Foreign Language Studies
