中考英語閱讀每日一練:顧此失彼

　　許多年前，農民為保護他們的雞而獵殺了很多老鷹。然而新的問題來了，田里的田鼠猖狂了起來，結果農民的莊稼大多給吃光了。這是怎么回事呢?看看下文你就知道了，但一定要記住：It is important for us to keep the balance of nature.

　　Not many years ago, some farmers were worried because hawkswere taking many of their chicken. The farmers didn’t know what to do. Finally they went to the countryofficials and asked for help.

　　“Kill the hawks,” the officials said, “We will even pay 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 didn’t know this. When they killed a lot of hawks, they changed the balance.

　　When people move into a new place, they often destroy many wild plants. Often these plants are food for the animals. If the animals can’t find enough plants to eat, they will starve or have to leave the place.

　　In one part of the USA, for example the deer there like to eat a certain kind of wild roses. The mountain lions there eat the deer. The number of deer, mountain lions and wild roses doesn’t change much if people leave things as they are.

　　But people killed many mountain lions in order to protect the deer. Soon there were so many deer that they ate up all the wild roses. Then the deer began to eat the green leaves of young trees. These trees were important to the farmers. So the farmers thought of ways to protect their trees. Now the deer had nothing to eat, and many of them died. This was another lesson from nature.

　　To keep the balance of nature is important for us to remember.

　　根據以上短文內容判斷正誤，正確的用“T”表示，錯誤的用“F”表示。

　　1. Finally the officials told the farmers to kill the hawks.

　　2. Field mice eat not only chickens but also the farmers’ grain.

　　3. When the animals can’t find enough plants to eat in a place, they will starve or have to leave.

　　4. The number of animals changes much if people leave things as they are.

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

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