哺乳动物与其他动物最主要的区别是

题目

哺乳动物与其他动物最主要的区别是
A 分布最广
B 有发达的神经系统
C 胎生哺乳
D 体温恒定

答案

What Is a Mammal?Mammals are animals that have hair,are warm-blooded,and nourish their young with milk.They range from tiny mice to the largest animals on Earch,the Whales.Mammals include apes,cats,ba...