1970 was World Conservation Year. The United Nations wanted everyone to know that the world is in danger. They hoped that govern

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问题     1970 was World Conservation Year. The United Nations wanted everyone to know that the world is in danger. They hoped that governments would act quickly in order to "conserve" nature. Here is one example of the problem. At one time there were 1,300 different plants, trees and flowers in Holland. But now only 866 remain. The others have been destroyed by modern man and his technology. We are changing the earth, the air and water, and everything that grows and lives. We can’t live without these things either. If we continue like this, we shall destroy ourselves.
    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation is necessary. Many are helping to save our world. They plant trees, build bridges across rivers in forests, and so on. In a small town in the United States a large group of girls cleaned the banks of 11 kilometres of their river. Young people may hear conservation through a record called "No One’s Going to Change Our World". It was made by the Beetles, Cliff Richard and other singers. The money from it will help to conserve wild animals.
The main idea of the first paragraph is ______.

选项 A、the danger of our world
B、the importance of conservation
C、that we’re destroying ourselves
D、that we are changing our world

答案B

解析 本题属段尾结论题。文章中的“World Conservation Year(世界保护年)”和“conserve nature(保护自然)”已提示答案。
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