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国宝大熊猫的秘密(第1页)

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大熊猫是我国独有的珍稀动物,也被称为“活化石。”

它们憨态可掬,讨人喜爱,还有许多不为人知的秘密。

你知道大熊猫是熊科动物还是猫科动物吗?因为大熊猫叫熊猫,所以很多人以为它是猫科动物。但事实上他们是一种熊。据动物学家考证,大熊猫是由古熊变化而来的。大约在1,1oo万年前,古熊演化成熊科动物和猫熊科动物,其实在国际上大熊猫也是被称为猫熊的。

更有意思的是据说大熊猫的祖先是吃肉的。后来因为环境的改变,变成了冰期,食物变少了,并且他们的基因也生了变化,吃肉的时候如同嚼蜡,于是熊猫家族决定尝试新食物。当他们吃到竹子时,现竹子水分多,淀粉足,所以就开始吃竹子。同时他们还为吃竹子净化出会修复的牙齿。这么大的熊猫变成了行走的吃竹子机器,他们不光吃竹子,还吃胡萝卜、南瓜等。如今他们的消化系统已经不太不太适合吃肉了。大熊猫在不同季节会挑选合适的竹子,有时候他偏爱竹竿,有时候偏爱竹叶一些,但是竹笋永远都是大熊猫的最爱,因为它营养多,水分多。大熊猫每天吃竹子的量达到9~18公斤。我现人类为了适应环境而改变环境,熊猫为了适应环境而改变他自己,这就是熊猫的顽强。

为了保护熊猫,人们做出了无限的努力。一些饲养熊猫的人员穿上熊猫服,喷上熊猫的尿液,让熊猫适应野外环境。一只人工繁殖大熊猫在2o11年出生了,他在2o13年放出野外。这是人类第1次现熊猫开始靠近野外族群,这是一个好兆头。我真为熊猫的适应而感到开心。

如今大熊猫由濒危降为易危,这说明我们人类对大熊猫保护力度和措施的加强,但是这不代表大熊猫的珍贵性有所降低,我们仍然会保护她,珍惜她。我爱国宝大熊猫。

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