It is only during the last few years that man has generally realized that in the world of nature a balance exists between all forms of life. No living thing can exist by itself. It is part of a system in which all forms of life are joined together. If we change one part of the nature order, this will almost certainly bring about changes in some other parts.
　　The cutting of forests reduced the supply of oxygen. The killing of weeds and insects by chemicals led to the wide-spread poisoning of animals and birds. The throwing of waste products into the ocean hurt life in the sea, while waste gases changed the chemical balance of the atmosphere and shut out some of the sun’s necessary life-giving rays.
　　And so we could go on adding more examples until in despair(绝望) we might feel like giving up the struggle to control these harmful human activities. Man is very clever at changing the world around him to satisfy his immediate needs, but he is not so clever at looking far ahead, or at thinking about what the future results of his action might be. Man may well destroy himself because of his silly action.
【小题1】The first paragraph tells us that _____.

It is only during the last few years that man has generally realized that in the world of nature a balance exists between all forms of life. No living thing can exist by itself. It is part of a system in which all forms of life are joined together. If we change one part of the nature order, this will almost certainly bring about changes in some other parts.

　　The cutting of forests reduced the supply of oxygen. The killing of weeds and insects by chemicals led to the wide-spread poisoning of animals and birds. The throwing of waste products into the ocean hurt life in the sea, while waste gases changed the chemical balance of the atmosphere and shut out some of the sun’s necessary life-giving rays.

　　And so we could go on adding more examples until in despair(绝望) we might feel like giving up the struggle to control these harmful human activities. Man is very clever at changing the world around him to satisfy his immediate needs, but he is not so clever at looking far ahead, or at thinking about what the future results of his action might be. Man may well destroy himself because of his silly action.

1.The first paragraph tells us that _____.

2.In the second paragraph the examples given are used to prove that _____.

3.The last paragraph suggests that in order to get his immediate benefits(利益) _____.

4.Which of the following is true according to the passage?

How many people have I met who have told me about the book that they have been planning to write but have never yet found the time? Far too many．

This is Life, all right, but we do treat it like a rehearsal（排演）and, unhappily, we do miss so many of its best moments．

　　 We take jobs to stay alive and provide homes for our families, always making ourselves believe that this style of life is merely a temporary state of affairs along the road to what we really want to do. Then, at 60 or 65, we are suddenly presented with a clock and several grandchildren and we look back and realize that all those years waiting for Real Life to come along were in fact real life．

　 In America they have a saying much laughed at by the English：“Have a nice day!” They speak slowly and seriously in their shops, hotels and sandwich bars. I think it is a wonderful phrase, reminding us, in effect, to enjoy the moment: to value this very day．

How often do we say to ourselves, "I'll take up horse-riding（or golf, or sailing）as soon as I get a higher position," only to do none of those things when I do get the higher position．

　　 When I first became a reporter, I knew a man who gave up a very well paid respectable job at the Daily Telegraph to go and edit a small weekly newspaper. At the time I was astonished by what appeared to me to be his completely abnormal（反常的）mental state. How could anyone turn his back on Fleet Street in central London for a small local area？I wanted to know．

Now I am a little older and possibly wiser, I see the sense in it. In Fleet Street the man was under continual pressure．He lived in an unattractive London suburb and he spent much of his life sitting on Southern Region trains．

46．The first paragraph of the passage tells us that 　　　　　．

　 A．we always try to find some time to write a book

　 B．we always make plans but seldom fulfill them

　 C．we always enjoy many of life's best moments

　 D．we always do what we really want to do

47．The underlined phrase "turn his back on" （paragraph 6） most probably means　　　．

　 A．leave for 　　　　　　　 B．return to 　　　　　　 C．give up　 　　　 D．rely on

48．The man （ paragraph 6） left his first job partly because he was ．

　 A．in an abnormal state B．under too much pressure

　 C．not well paid　　　　　　　　 　　　 D．not respected

49．What is probably the best title for the passage?

　 A．Provide Homes For Our Family　 　　　　　　　 B．Take Up Horse-riding

C．Value This Very Day　　　　　 　　　　　　　 D．Stay Alive