有一则寓言，说我们的国宝大熊猫和北极熊原本是一个祖先，后来由于环境和气候的变化，它们才一分为二，一批向南迁徙到我国四川的温带地区，另一批则北迁到极地的寒带地区。按照普通的逻辑，进入极地冰雪世界的熊不是被冻死，就会被饿死；而来到温带地区的熊因为生存环境的改 There is an allegory that our national treasure, the giant panda, and the polar bear were originally an ancestors. Later, due to changes in the environment and climate, they were divided into two groups. A number of them moved southward to the temperate regions of Sichuan Province in our country. The other group moved northward To the polar cold zone. According to common logic, into the polar ice world of the bear is not frozen to death, it will be starved to death; and came to the temperate zone because of the living environment of the change