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　　1970 was World Conservation (保護) Year. The United Nations wanted everyone to know that the world is in danger. They hoped that governments (政府) would act quickly to conserve nature (保護自然) . 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 (剩余) . The others have been destroyed by modern man and his technology. We are changing the earth, the air, water and everything that grows and lives. We can't live without these things. If things go 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 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 number of girls cleaned the banks of 11 kilometres of their river. Young people may hear about conservation through a record called “No one's going to change our world.” It was made by the Beatles, Cliff Richard and other singers. The money from it will help to conserve animals.

(1) The United Nations wanted everybody to know that ________.

[　　]

(2) There are fewer plants, trees and flowers in Holland because ________.

[　　]

A．the weather there is too hot

B．the weather there is too cold

C．the weather there isn't warm

D．modern man and his technology have destroyed the place

(3) We shall ________ if we are changing the earth, the air, water and everything that grows and lives.

[　　]

A．make our life better

B．make ourselves more comfortable

C．make the world more comfortable

D．to destroy ourselves

(4) The moat important thing for us to do is ________.

[　　]

A．to clean the banks of our rivers

B．to conserve animals

C．to change the earth

D．to conserve nature

(5) From this passage we know that ________.

[　　]

A．we must change the earth

B．we should develop technology

C．we must act quickly to conserve nature

D．we should plant more plants, flowers and trees