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  • 1. 从方框内的选项中选出能填入空白处的最佳选项。

    A. for their fur, feathers, meat and bones

    B. With more and more people taking part in protecting animals

    C. there will be many rats

    D. keep the balance of nature all through the human history

    E. if the farmers kill a large number of eagles (老鹰)

        Why should people care about animals? Because we need them. Animals are natural resources (资源) and they . From the ancient time, people killed animals 6. Thousands of kinds of animals have disappeared from the world. Many kinds of animals are on the danger list today. About 170 kinds in the United States are in danger. Animals are more than just beautiful and interesting; they also have their places in the balance of nature. Destroying one kind of animal can create many problems. For example, , rats will destroy the farmers' stores of corn and grain. Why? Because eagles eat rats. With no eagles to keep down their numbers, . Luckily, some people are working to help save these endangered animals. Some groups raise money to make people know about this problem. And they also try to protect the animals in danger by legal form. , the nature will be more harmonious (和谐的).

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