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Do you have any unforgettable thing?Certainly I think,so do I.Last spring,on a sunshine day,our students and teachers visited East Park.When we went into the park,we saw many colorful flowers and several beautiful butterflies dancing on the flowers,even the little bees were attracted by such beautiful scene.Suddenly,we smelled the stinking air.We all frighted and looked for the reason.On the back of a food shop,there were many plastic bags and bottles with dirty oil floating on the lake.We all felt angry.We thought we must do something to change the situation.

你有什么难忘的事吗？当然，我想，我也是。去年春天，在一个阳光明媚的日子，我们的学生和老师参观了东方公园.当 我们走进公园，看到许多五颜六色的花，还有几只美丽的蝴蝶在花上翩翩起舞，连小蜜蜂都被这些美丽的花吸引住了scene.突然,我们闻到了臭气味.大家都吓坏了，寻找源头.在一家食品店的后面，有许多塑料袋和瓶子，上面漂着脏油湖.所有的人的感觉很生气. 我想我们必须做点什么来改变现状。