I let the river flow back 500 words.

There is a small river in front of my house, and my family often goes for a walk by the river. The clear river gurgles, small fish swim around in the water, and they surface naughty from time to time to blow small bubbles. The green grass floats under the water and has caught up with the small fish. Thousands of willow branches hang down from the river bank, and the breeze blows, and the willow branches dance with the lush grass on the ground.

Adults who live by the river often cast nets to fish in the river. Lively fish and shrimp have become our food again and again, and the delicious food really makes people salivate. This river is more lively in summer. Women wash clothes, and children swim and play in the river. It was fun.

But who would have thought that the river a few years ago was not like this at all. The river is very dirty, revealing a shallow black color, and a faint smell is floating in the wind, which makes people very uncomfortable. No one dares to eat the caught fish, because no matter how much seasoning you put in, no matter how good your cooking is, no one can stand the strong smell of kerosene.

At that time, we often saw the bodies of corrupt animals floating on the water, as big as 100 kilograms of fat pigs, as small as a few kilograms of chickens and ducks, and from time to time we could see the bodies of various livestock and poultry. There are often dead fish on the banks of the river, which are exposed to the sun with their white bellies turned over, stinking, and the smell coming from far away makes people want to vomit.

Why did this river become like this? It turns out that there are many small chemical plants in the upper reaches of the river, which unethically discharge untreated wastewater directly into the river. For example, there is a dye factory near our school, and their industrial wastewater is directly discharged into the river through a stream. The water in that stream is as black as ink, with a strange pungent smell, which makes people dizzy from a distance. And people around you throw dead pigs, dead chickens and dead ducks into the river without quality. Over time, the river has become so ugly that people can't bear to go near it and even cover their noses.

The injured river finally awakened people's conscience. With the attention of many people of insight, the government finally made up its mind to control pollution and protect rivers. What impressed me the most was that the government shut down all polluting enterprises and distributed a large trash can to every household, asking everyone to separate the domestic garbage into the trash can and send special personnel to collect and treat it. At the same time, many workers often go to various residential areas, distribute leaflets, put up slogans, preach laws, regulations and related documents, and educate everyone to clean up garbage and protect the environment.

After a period of hard work, the river slowly recovered to its original state, the river became crystal clear, and the scenery along the river became beautiful.

The experience of this river tells us that if we hurt nature, we will eventually learn from it. Our children should establish a sense of protecting nature from an early age, starting from now, starting from small things, protecting the environment and caring for every grass and tree of nature. In order to make the mountains greener and the water greener