Not many years ago, some farmers were worried because hawks（鹰）were taking many of their chickens. The farmers did not know what to do. Finally they went to the county officials and asked for help.“Kill the hawks,”the officials said,“We’ll even pay you for them.”So the farmers began to think of ways to kill the hawks. The farmers killed many hawks. They no longer had to worry about their chickens. But they now had a new worry. Field mice were eating up a lot of the farmers’ grain. How did this happen? Hawks eat not only chickens but also field mice. They eat more field mice than chickens. But the farmers did not know this. When they killed a lot of hawks, they changed the balance（平衡）of nature.

根据短文内容判断正（T）误（F）

从A、B、C、D中找出一处错误。

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Hawks eat not only(A) chickens(B) but also(C) eating(D) field mice.

阅读理解

　　Not many years ago, some farmers were worried because hawks(鹰) were taking many of their chickens. They didn't know what to do. Then they decided to kill the hawks.

　　They killed many hawks. Soon they didn't have to worry about their chickens. But they now had a new worry. Field mice(田鼠) were eating up many of their crops.

　　Why?

　　Hawks eat not only chickens but also field mice. They eat more field mice than chickens. But the farmers didn't know this. When they killed lots of hawks, they changed the balance of nature(生态平衡).

　　When people move into a new place, they often pull out many wild plants. Many of these plants are food for the animals. If the animals cannot find enough plants to eat, they will die or have to leave the place.

　　In the United States, for example, the deer there like to eat a kind of wild flower. The tigers there eat the deer. The number of deer, tigers and flowers doesn't change much if people do nothing to them.

　　But people killed many tigers because they wanted to protect(保护) the deer. Soon there were so many deer that they ate up all the flowers. Then the deer began to eat the leaves of young trees. These trees were important to the farmers. So they found out ways to protect their trees. Now the deer had nothing to eat, and many of them died.

　　It is important for us to keep the balance of nature.

根据短文内容正(T)误(F)。

1．The farmers were worried because many of their chickens were taken by hawks.

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2．The farmers didn't know hawks eat more chickens than field mice.

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3．The animals will die or have to leave the place without enough plants to eat.

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4．The number of deer, tigers and flowers will change much if people do nothing to them.

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5．Then there were not enough flowers for so many deer to eat.

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6．The deer never eat the leaves of young trees.

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7．It is very important for us to keep the balance of nature.

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