阅读理解

　　For thousands of years men have dreamed about going to the moon. Now men have landed on it but living there will not be easy, because the moon is a dead world without air or water.

　　Man has lived on the earth under very hard conditions. At the South Pole (南极) men have lived for many months in temperatures of 75 to 100 degrees below zero centigrade.

　　Living on the moon will be even harder than living at the South Pole. Each night is two weeks long and the temperature drops to 200 degrees below zero centigrade. Each day is two weeks long, but the temperature rises to 200 degrees above zero.

　　If man hopes to live on the moon he will have to make his houses there strong and airtight (密封的).Instead of building up, he will have to dig below the moon's surface (表面) and live underground. The first men on the moon had to carry their own air, water and food with them from the earth. Later when men live on the moon, spaceships will have to keep bringing in more supplies. Many years later, man might be able to find ways to get his air, food and water supplies from the moon itself.

1．Choose the best title of the text.

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2．A night on the moon ________.

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3．Temperatures on the moon are ________.

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A．changing with the four seasons

B．quite different in different places

C．the same all the time

D．very high in the day and very low at night

4．Houses on the moon will have to be made below the moon's surface so that men can ________.

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A．keep getting water from underground

B．keep the air from rushing out

C．live underground

D．keep the heat and cold out

5．From the text we can infer (推断)________.

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A．living on the moon is impossible

B．to live on the moon we must find ways to keep on getting air, water and food

C．man is likely to live on the moon if rich enough

D．air, water and food are due to be found on the moon

1970 was "World Conservation Year". The UN wanted everyone to know that the world was in danger. They hoped that government(政府) would act quickly in order to conserve (保 护) 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 860 remain. The others have , been de¬stroyed by modern man and his technology. We are changing the earth,  the air and the water,  and everything that grows and lives here. We can\'t live without these things. If it continues 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 kilometers 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 and other singers. The money from it will help to con¬serve wild animals.
   1. The UN set up "World Conservation Year",  because________.
       A. the world was in danger of war
       B. the government had done something to protect the world
       C. many things were destroyed by the technology
       D. man and his technology destroyed the earth badly
   2.________kinds of plants have disappeared in Holland in the past few years.
       A. 860       B. 440              C. 1 300           D. 2 160
   3. "NO ONE\'S GOING TO CHANGE OUR WORLD" is________.
      A. a record        B. a song          C. a book         D. a CD
   4. It is impossible to save our world if we________.
      A,  plant trees            B. clean the banks of rivers
      C. pick rubbish            D. listen to the record
   5. The passage mainly tells us      .
      A. the people who will be living in the world of tomorrow are the young of today
      B. what will happen in the world in the future
      C. conservation of nature is necessary
       D. everyone has known the importance of conservation of Nature since 1970