呱呱呱,我是一只快乐的乌鸦,整天无忧无虑地唱着歌。一天,我口渴了,要找水喝。我来到大河姑娘身边,她穿着五彩缤纷的花裙子,活泼的小鱼儿在她的裙摆中游泳。我喝了一口水,真甜!我飞呀飞呀,不知飞了多少年,环游了世界,如今又回来了。我口渴了,要找水喝。我来到了小河边,只见花儿垂头丧气,小草弯着腰,河里的鱼儿不见了,只剩下几个可怜的田螺。河水又脏又臭,难以下咽。我问小河:“原来清甜的河水怎么变成这样了?”小河叹了一口气,无奈地说:“有什么办法 Quack, I am a happy crow singing songs carefree all day long. One day, I was thirsty, looking for water to drink. I came to the river girl, she was wearing a colorful flower skirt, lively little fish swimming in her skirt. I drank water, sweet! I fly ah fly, I do not know how many years fly around the world, and now come back. I’m thirsty, I am looking for water. I came to the river, I saw the flowers dejected, bent over the grass, the fish disappeared from the river, leaving only a few poor snail. The water is dirty and hard to swallow. I asked Creek: ”The original sweet river how to become like this?“ ”Small river sighed, reluctantly said: " What is the way