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  3. Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number.

Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number.

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问题    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, which offer him companionship; some give protection, and some do hard work which man cannot do for himself. Dogs, which serve man in all three capacities, are found in various breeds 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 sure-footed, 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 odds and ends of table scraps, and then wonder why the animal seems listless 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 well cared for 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, hardworking animals deserve to have some time, money and attention spent on their health.
To keep a domestic animal physically fit, its owner is advised______.
选项 A、not to hesitate to spend enormous amount of money on it
B、to pay attention to its proper feeding
C、not to allow it to take excessive amounts of exercise
D、to join some sort of pet-keeping organizations
答案B
解析 根据文中第三段的“All domestic animals need proper food…Containers for food and water must be washed regularly if the animal is to maintain good health．”可知，所有家养的动物都需要合适的食物，放置食物和水的容器必须定期清洗，这样才能使动物保持健康。据此可知，B项正确。
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