2008年12月英语四级作文真题:一次性塑料袋

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Owing to the convenience of it,disposal bags had been used widespread which cause some problems.Now I will talk about the problems caused by disposal bags. First,disposal bags are abundoned casually by people who buy something needed to be put into disposal bags.However they can do a lot harm to the enviroment,especially to the farmlands.There are a large number of farmlands polluted heavily by the disposal bags so the seeds couldn't be planted on them.Even worse,disposal bags are made of oil and so on.To make them consume much oil every year and then turn up the phenonmena of lacking oil.And the bad recycle of dispoal bags aggravates that. So,Limiting the use of disposal bags makes the environment become more beautiful and can save our most valuable resources.