We find different kinds of animals in the world. Some animals, such as tigers and lions, live in big forests and they are called 1 animals. Some others like sheep and dogs are2by men and they are called domestic animals (家养动物). These animals are very different from one another, but we can 3 them into big groups: those that eat other animals and those that eat grass and leaves. Animals like the4belong to the first group.

    Animals are 5 great use to human beings. Men6 wild animals for their 7 and meat. Domestic animals are 8 more important to men. Without them, life will be 9People make use of animals in many 10.

    Cows and pigs are useful to men's 11. They give 80% of the12men eat every year. Skin of some animals can be 13 into expensive overcoats and shoes, which are warm and comfortable and 14 a long time. They are very welcome in15countries.

    Wool, which is now one of the most important materials (原料) for textile (纺织)16 comes from some certain17 From cows, we get milk. And we shouldn't 18that some domestic animals are kept for transport. Many people 19ride horses. Arabs ride on camels that travel in deserts for days without drinking. In some places animals are still used to plough (犁地) the field. It is20 that men just can't live without these animals.