绝种

这是一个晴朗的早晨，我带领同学们到八达岭长城游玩。阳光明媚，春意盎然，莺飞燕舞。

“哎，这只鸟叫什么？我怎么不认识？”小明指着一只唱歌的无毛鸟问我。我仔细一看：“那不是琉球翠鸟吗？”“可是，这种鸟一百多年前就已经灭绝了呀！”听着同学们惊奇的叫声，我放眼望去，许许多多以前在图片上才能看到的野生动物都在这里活生生地出现了：有消失了百余年的渡渡鸟，还有欧洲野马、东部马鹿、巴德兰兹大野羊……

我抬手看看手表：没错，今天是2051年3月16日，我当上校长十周年的日子。我轻轻按动表上的红色按钮，野生动物救护繁殖中心的科学家的虚拟形象立刻出现在我们面前。他微笑着对大家说：“同学们，你们看到的这些动物，是生态学家的研究成果，他们让已经灭绝的野生动物复活了。”“太棒了！”同学们欢呼雀跃。只见那古老的长城蜿蜒起伏，长城内外草正绿、花正艳，珍禽异兽或休憩、或觅食、或翱翔，好一幅人与自然和谐共处的画面！

生态学家指着美洲的亚利桑那豹说：“你们看，由于我们国家生态平衡，世界各大洲的动物们都来到这里安家落户了。”啊，看着这一群群姿态各异的野生动物，大家兴奋无比。这里是动物的天堂，是我们与它们平等交流的地方。当年的八达岭野生动物保护区已经扩大到整个长城内外，丰富的物种为地球生态的平衡作出了巨大贡献。

中午，大家恋恋不舍地告别了野生动物，回到校园。同学们不约而同地表示：长大以后也要做个生态学家，为地球家园的建设贡献自己的力量！

[假如绝种动物又复活了想象作文

there is only so much land on the earth, and so what we can do with it is limited. some people believe that human needs for farmland, housing and industry should come first, while others believe that some land should be set aside for endangered animals. i am of the opinion that we should reserve some land for the worlds animals for the following reasons.

first, mankinds need for land is constantly growing. if the demand is not checked in some way, humans will eventually develop all of the earths available land. at that time, mankind will have no more room to grow, and all the wild animals will have disappeared, as well as other valuable resources. second, humans are able to innovate and can use the land that they already possess in more efficient ways. animals are unable to do this. once their land is taken away from them they will die. third and last, endangered animals are an important part of the biodiversity of our planet. if they disappear, we cannot predict what the effect will be. therefore, we should treat such animals as a valuable resource to be protected.

to sum up, the worlds endangered animals are an important resource and we should protect them by setting aside some land for them. although mankinds need for land continues to grow, people are intelligent and inventive enough to put the land they have to better use. in this way, we can have enough land for farming, housing and industry, and preserve the biodiversity of the planet at the same time.