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    answer most kinds into times drinking do much give our Which animal do we need 76 , dogs, horses, pigs? No! The 77 to the question is cows. Why cows? Cows give us milk. And milk is one of 78 most important 79 of food. Supposethat all the milk cows make in one year were put 80 bottles. And suppose these bottles were put side by side. The line of bottles would go all around the world 400 81 . That is a lot of milk, less than half of which is used for 82 and cooking. Most of it is used to make butter, cheese, ice cream and many other things. It takes many cows to give us that 83 milk. But not as many as it used to, a cow used to give only about 1500 quartsof milk a year. Now a fine cow may 84 more than 3000 quarts in a year. Why 85 cows give more today? Now farmers have better cows. The cows get better care and better food. 【查看更多】

     

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    answer most kinds into times drinking do much give our
         Which animal do we need 1.            , dogs, horses, pigs? No! The 2.             to the question is cows.
    Why cows? Cows give us milk. And milk is one of 3.             most important 4.             of food.
         Suppose (假设) that all the milk cows make in one year were put 5.              bottles. And suppose these
    bottles were put side by side. The line of bottles would go all around the world 400 6.             . That is a lot
    of milk, less than half of which is used for 7.             and cooking. Most of it is used to make butter, cheese,
    ice cream and many other things. It takes many cows to give us that 8.             milk. But not as many as it
    used to, a cow used to give only about 1500 quarts (夸脱) of milk a year. Now a fine cow may 9.             
    more than 3000 quarts in a year. 
        Why 10.             cows give more today? Now farmers have better cows. The cows get better care and
    better food.

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