◎ 题干
词语填空:选择所给单词完成短文。
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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◎ 知识点
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