A snake is a long and thin animal that lives in grass or other dark places. It has no legs or feet, but can move very fast on its stomach. Snakes usually have green,yellow or black skins, which make it difficult for their enemies to find them.Some kinds of snakes live in water. They can swim as freely as fish.

　　 Snakes are cold-blooded animals. They take many things as food, such as mice, sparrows, frogs, birds'eggs, pests and so on. As snakes are dreadfullooking, people are afraid of them.

　　 In fact, snakes are not as dreadful as they look. They can help us to kill mice and pests. They can provide us with delicious meat. Their blood is a good drink.Poisonous snakes are especially useful. We can make valuable drugs with them.

　　 蛇

　　 蛇是生长在草地或其他黑暗地方的又长又瘦的小动物，它没有腿脚，但却可以靠腹部快速移动。蛇的皮肤通常是绿色、黄色或黑色的，这使得它们不易被敌人发现。有些蛇生活在水中，能像鱼儿一样自由自在地游来游去。

　　 蛇是冷血动物；它们以许多东西为食，如老鼠、麻雀、青蛙、鸟蛋、害虫等；因为蛇样子可怕，人们大多怕它。

　　 事实上，蛇并不像看起来那样可怕，它们帮我们捕杀老鼠和害虫，并可以提供可口的肉食，它的血液可制成上等口服液。毒蛇特别有用，我们可以用它们制药。