Pollution is a“dirty”word.To pollute means to contaminate-topsoil or something by introducing impurities which make(31) ___unfit or unclean to use.Pollution comes in many forms.We see it，smell it，(32) ___it，drink it，and stumble through it.We literally lived in and breathe pollution，and(33) ___surprisingly，it is beginning to(34) ___our health，our happiness，and our civilization.

　　Once we thought of pollution(35) ___meaning simply the smog--the choking，stinging，dirty(36) ___that hovers over cities.But air pollution，while it is(37) ___the most dangerous，is only one type of contamination among several(38) ___attack the most basic life functions.

　　Through the uncontrolled use of insecticides，man has polluted the land，(39) ___the wildlife.By(40) ___sewage and chemicals into rivers and lakes，we have contaminated our(41) ___water.We are polluting the oceans，too，killing the fish and(42) ___depriving ourselves(43) ___an invaluable food supply.

　　Part of the problem is our exploding(44) ___.More and more people are producing more wastes.But this problem is intensified by our“throw—away”technology.Each year Americans(45) ___of 7 million autos，20 million tons of waste paper，25 million pounds of toothpaste tubes and 48 million cans.We throw away gum wrappers，newspapers，and paper plates.It is no longer wise to(46) ___anything.Today almost everything is disposable. (47) ___of repairing a toaster or a radi0，it is easier and cheaper to buy another one and discard the old，even(48) ___95 percent of its parts may still be functioning.Baby diapers，which used to be made of reusable cloth，are now paper throw-aways.Soon we will wear clothing made of(49) ___：“Wear it once and throw it away”will be the slogan of the fashionable consciousness.

　　Where is this all to end? Are we turning the world into a gigantic dump，or is there hope that we can solve the pollution problem?(50) ___，solutions are in sight.A few of them are positively ingenious.

　　參考譯文

　　污染是一個“骯臟”的詞語。污染就是弄臟——表土或什么東西，通過引進雜質使其不健康或不潔。污染可以有很多形式。我們可以看見它，聞到它，嘗到它，喝到它，從它中間掙扎走過。我們簡直生活在污染中，呼吸著它，毫不奇怪，它開始威脅我們的健康、我們的幸福和我們的文明。

　　我們曾經把污染只是想成煙霧——盤旋在城市上空的那種嗆人、刺鼻、骯臟的空氣。但是空氣污染雖然是最為危險的，但也只是幾種攻擊最基本生活功能的污染之一。

　　通過不加控制地使用殺蟲劑。人類已經污染了土地，殺死了野生動物。通過將污水和化學物質傾倒進河流和湖泊，我們已經污染了我們的飲用水。我們也正在污染海洋，殺死魚類，因而剝奪了我們那無價的食物供應。

　　人口爆炸也是引起污染的原因之一。越來越多的人正在制造越來越多的垃圾。但是，這一問題被我們的“一次性”技術加劇了。每年美國人都要扔掉700萬輛汽車、2，000萬噸廢紙、2，500萬磅牙膏皮和4，800萬個罐子。我們還扔掉口香糖包裝紙、報紙和紙盤。再次利用已經不再明智了。今天。幾乎所有東西都可以扔掉。比起修一臺烤箱或收音機，買一臺新的、扔掉舊的更容易、更便宜，雖然它95%的部件仍可以使用。嬰兒尿布以前用循環(huán)使用的布制成，現(xiàn)在都變成紙質的一次性產品了。不久我們就會穿上紙質的衣服：“穿一次就扔掉”將成為流行意識的口號。

　　所有這些到什么時候才能結束?我們是不是正在把世界變成一個巨大的垃圾場，或者我們還有沒有希望解決污染問題?幸運的是，已經有了解決問題的辦法，有幾種辦法還十分具有獨創(chuàng)性。