We find different kinds of animals in the world. Some animals, such as (1) and lions, live in big forest and they are called (2) animals. Some others like sheep and dogs are kept by men and they are called domestic animals. 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 the tiger (4) to the first group (5) eat other animals.
Animals are (6) great use to human beings. Men hunt wild animals for their fur and meat. Domestic animals are (7) more important to men. Without them, life will be difficult. People make use of animals in many (8) .
Cows and pigs are useful to men’s food. They give 80% of the (9) men eat every year. Skin of some animals can be (10) into expensive overcoats and shoes, which are warm and comfortable and (11) a long time. They are very popular in (12) countries. Wool, which is now one of the most important materials for textile （纺织） (13) , comes from some certain (14) . From cows, we get (15) . And we shouldn’t (16) that some domestic animals are kept for (17) , for example, many people (18) ride horses. Arabs ride on camels that travel in deserts for days without (19) . In some places animals are still used to plough field. (20) is clear that men just can’t live without these animals.