本帖最后由 nkgl 于 2009-8-1 21:00 编辑
it is more important to use land for human need than to save land for endangered animals.
认为save land for endangered animals更重要
保护生物多样性
保护生态环境
人类对自然已经破坏过多
总结
Nowadays, given the situation that the land on earth is limited, a heated discussion about the use of land has aroused wide public concern. Some people claim that human needs should be of privilege, on the ground that it is we who dominate the earth. While others hold the brief that we should give priority to the use of land for endangered animals, considering that all the species on earth is of equivalent importance and we should save those endangered one. As far as I am concerned, nothing is more important than to save land for endangered animals, because of the protection of the biodiversity and the ecological environment.
In the first place, we cannot emphasize the importance of the biodiversity. It is universally acknowledged that the biodiversity contributes directly to the earth's ecological balance. Thanks to it, the environment can stay relatively stable when confronts some catastrophes. To illustrate this process, let us take a simple food chain for instance. In the grass-rabbit-tiger process, if the rabbit dies out then it would cause the depopulation of the tiger and an end to this process. However, the biodiversity insures that there is, at least, a substitution for the rabbit, which enables the tiger to survive. So important is biodiversity that we must attach great significance to the use of land for endangered animals.
When it comes to the ecological environment, people are familiar with it through the mess media and the disasters around. Human can not live without it. Accordingly, the protection of the ecological environment is closely related to the human existence. On no condition can we pose a threat to the ecological environment. In addition, if, unfortunately, we damage it, we have to spare no effort to compensate for it. Also, there is no denying that an increasing number of animals becoming extinct means a more serious environmental degradation. Consequently, it pays to put the use of land for endangered animals in the first place.
Admittedly, it is our nature that we think of our own need first. For the past decades, we have always considered our interest before everything else. We construct dams, cut down trees, reclaim lands from lakes and waste other valuable natural resources. It is time for us to focus our attention on the other species on earth and save those endangered one.
All in all, I am right behind the idea that we should give priority to the use of land for endangered animals. Although human need is of vital importance, it falls back to the second place when compared with the protection of endangered animals. To build up a more harmonious society, we should take effective measures to make up for what destructions we have caused to our nature.
刚开始练作文 这篇并没计时 自己考虑是先写几篇上手 然后开始计时练 不知道大家有什么好的建议
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