Water Pollution-水污染
Water pollution is caused by waste from factories and cities. Oceans are able to clean themselves, but certain seas,once they become dirty, are not able to do so. One example is the Mediterranean which lies between Europe and Africa. It has onlyeone narrow entrance to the ocean in the west. On quarter of the shores of the Mediterranean are polluted and are no longer safe for swimming, as a lot of diseases are present in the water. In most places it is not safe to eat the fish.
Lakes also have the same problems. Lake Baikal in Asia was once the cleanest in the world, with over 700 different kinds of plant and animal life. Now, however, the waters of this great lake, which is also the world＇s deepest (over 1,740 metres), have been dirtied by waste from a chemical factory.
In 1989 an oil tanker hit a rock off the northwest coast of Alaska. 35,000 tons of oil poured into the sea. The accident was one of the worst in history. More than 34,000 birds and
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10,000 animals were killed. 4,800 square kilometres of ocean were polluted.
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水污染發(fā)生在江海湖泊。作者舉例說(shuō)明一些海域及湖泊的污染原因及狀況。讀者可用此題目從不同的角度加以描述或議論。
[參考譯文]
水 污 染
水的污染是由于工廠和城市的廢物引起的。大洋能夠自身清除污染，但是某些海域一旦被污染，卻沒(méi)有自身清污的能力。位于歐洲和非洲之間的地中海就是一個(gè)例子。它只在西部有一個(gè)狹窄的通往大洋的入口。四分之一的地中海海岸被污染了，而且由于水中帶有大量病菌，所以在水中游泳就不再安全了。大多數(shù)地方，吃魚(yú)也不保險(xiǎn)。
湖泊也遇到了同樣的問(wèn)題。亞洲的貝加爾湖曾經(jīng)是世界上最清潔的湖，湖里有700多種不同的植物和動(dòng)物 。而如今這個(gè)大湖——也是世界上最深的湖(1 740多米深)——湖水已經(jīng)被一家化工廠的廢物污染了。
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1989年，一艘油輪在阿拉斯加西北海岸的海面上觸礁，35 000噸油傾入大海。這是歷史上最嚴(yán)重的事故之一。34 000多只鳥(niǎo)和10 000多頭動(dòng)物死亡，4 800平方公里的海洋受到污染
