对某种动物或植物的英文简介要是人类的朋友,对人类有贡献,要短一点
问题描述：
对某种动物或植物的英文简介
要是人类的朋友,对人类有贡献,要短一点
答
Bears,unlike any other mammal,are born very small,much smaller than mammals of a similar size.In fact,when they are born,their weight is 10% of that of a mammal of similar size.The reason bears are bo...