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

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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, and offer him【B1】______; some give him protection, and some do hard work which man can not do for himself.The【B2】______of certain countries are【B3】______for their very lives on the camel. the yak, or the reindeer. In the West Indies the little donkey, strong and sure-footed, carrying heavy loads even in【B4】______places, is a familiar sight.
    Trained and【B5】______for many generations.【B6】______animals are not【B7】______ to roaming in search of food and【B8】______.They look to their masters to provide for their needs. 【B9】______
    All domestic animals need proper food. It must be suitable for them, sufficient in quantity, fresh and clean. The quantity of food depends on the size of the animal and the amount of exercise it takes. 【B10】_____
    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 cheap prices.【B11】______
【B10】
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, and offer him(36)companionship; some give him protection, and some do hard work which man can not do for himself. The(37)inhabitants of certain countries are(38)dependent for their very lives on the camel, the yak, or the reindeer. In the West Indies the little donkey, strong and surefooted, carrying heavy loads even in(39)mountainous places, is a familiar sight.
    Trained and(40)tamed for many generations, (41)domestic animals are not(42)accustomed to roaming in search of food and(43)shelter. They look to their masters to provide for their needs.(44)And as long as these are supplied, they are content to do what their masters required.
    All domestic animals need proper food. It must be suitable for them.sufficient in quantity, fresh and clean. The quantity of food depends on the size of the animal and the amount of exercise it takes.(45)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 cheap prices.(46)Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health.

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答案Containers for food and water must be washed regularly if the animal is to maintain good health

解析 本空的关键点为container,regularly,maintain good health等。大致思路为:To maintain the animal’s health,containers for food and water must be washed regularly.
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