求一篇英语阅读的全文，最好有翻译，在线等，急求Recently man has generlly……
翻译： 最近 人们大体上意识到在自然界中，存在一个什么与什么么之间的平衡
谓语 has realized
宾语 是一个从句 that in the world of nature a balance exists between。。。。
recently 最近 表示时间 做时间状语
It is only during the last few years that man has generally realized that in the world of nature a balance exists between all forms of life. No living thing can exist by itself. It is part of a system in which all forms of life are joined together. If we change one part of the nature order, this will almost certa inly bring about changes in some other part.
The cutting of forests reduced the supply of oxygen. The killing of weeds and insects by chemicals led to the wide-spread poisoning of animals and birds. The throwing of waste products into the ocean hurt life in the sea, while waste gases changed the chemical balance of the atmosphere and shut out some of the sun’s necessary life-giving rays.
And so we could go on adding more examples until in despair(绝望) we might feel like giving up the struggle to control these harmful human activities. Man is very clever at changing the world around him to satisfy his immediate needs, but he is not so clever at looking far ahead, or at thinking about what the future results of his action might be. Man may well destroy himself because of his silly action.
答案 ： ADCB