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 companion-ship; 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 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 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 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.
What main idea does the author want to convey in the first paragraph?
根据文章第一段第一句话“Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number.”可知，人类学会了与大量的动物交朋友。”故选B。
When an animal is underfed, it will probably ________.
由第三段第二句话，“Some people feed a pet dog or cat...wonder why the animal seems listless and dull”可知，供料不足可能导致宠物立 刻产生不适。故选B。
Which of the following is NOT true of dogs according to the passage?
根据文章第一段倒数第三句“The Husky can live in the cold polar regions, and the Saluki is at home in the hottest parts of Central Africa”， 哈士奇可以生活在寒冷的极地地区，萨卢基狗则生活在中非最热的地 区，并未提到“他们是世界上已知的最强壮的品种”。故选D。
To keep a domestic animal physically fit, its owner is advised ________.
根据文章第三段倒数第二、三句“The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding.”可知，过度喂食和供料不足都不好。由此可 知，主人应合理喂养宠物。故选B。
Which of the following would be best TITLE for this passage?
文章主要介绍了合理喂养宠物和及时治疗宠物的重要性，故选 D。