Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number.Some are pets，offering him companionship；some give protection，and some do hard work which man cannot do for himself.Others，unfortunately，are kept as food.Dogs，which serve man in all four capacities (Korea and China are big dog eaters)，are found in various breeds (品种) in all countries of the world.The Husky can live in the cold polar regions，and the Saluki is at home in the hottest parts of Central Africa.The inhabitants of certain countries are dependent for their very lives on the camel.In the West Indies the little donkey，strong and sure­footed，carrying heavy loads even in mountainous places，is a familiar sight.

　　Trained and tamed for many generations，domestic animals are not accustomed to roaming in search of food and shelter.They look to their masters to provide for their needs，and as long as these are supplied，they are content to do what their masters require.

　　All domestic animals need proper food.It must be suitable for them，sufficient in quantity，fresh and clean.Some people feed a pet dog or cat on left­over food，and then wonder why the animal seems listless (倦怠的) and dull.The quantity of food depends on the size of the animal and the amount of exercise it takes.Overfeeding is as bad as underfeeding.Containers for food and water must be washed regularly if the animal is to maintain good health.

　　Even well­cared­for animals may sometimes fall ill.If this happens，the wise master seeks the best advice he can get.All sorts of medicines and treatments are available for sick animals，and in some countries organizations exist to provide them free or at a cheap price.Useful，friendly and hardworking animals deserve to have some time，money and attention spent on their health.

　　【语篇解读】　在大千世界中，动物与人类的生活息息相关。驯养动物与人类之间的关系更是微妙而亲密。

　　1．What does the author mainly want to convey in the first paragraph?

　　A．There exist thousands of species of animals in the world.

　　B．Man came to establish a close relationship with a number of animals.

C．In some regions dogs seem to be more closely related to man.