注意：1、每处错误及其修改均仅限一词； 2、只允许修改十处, 多者（从第11处起） 不计分。 our school lies on the foot of a mountain with a small river passes by. it used to be a quiet, clean and beautiful place for a school. it is a pity which things have changed after a chemical factory was built near our school one year ago. every day the factory produces many waste water and some harmful gases. the terribly pollution is harmful to our health. what’s bad, the great noise f
