In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources（资源） seemed to be
26 .
Today things are
27 , the world has become too
28 . We are using up our natural resources too quickly, and at the same time we are
29 our environment with dangerous chemicals. If we continue to do this, human life on the earth will not
30 .
Everyone
31 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing
32 , more and more fish are caught. We know that if too many trees are cut down,
33 will disappear and nothing will grow on the land. Yet, we
34 to use bigger and more powerful machines to
35 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. ___
36, in most countries wastes are
37 put into rivers or into the sea, and there are
38 laws to stop this. We know, too, that if the
39 of the world continues to rise at the present rate, in a few years there will not be enough food. What can we do to
40 these problems ?
If we eat more vegetables and less
41 , there will be more food available for everyone. Land that is used to grow crops
42 five times more people than land where animals are kept. Our natural resources will
43 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth
44 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner
45 in the future.
| 小题1: | | A．beautiful | B．unlimited | C．rare | D．valuable |
|
| 小题2: | | A．common | B．the same | C．changeable | D．different |
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| 小题3: | | A．crowded | B．small | C．dirty | D．busy |
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| 小题4: | | A．protecting | B．saving | C．polluting | D．fighting |
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| 小题5: | | A．breathe | B．survive | C．drink | D．move |
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| 小题6: | | A．wonders | B．realizes | C．considers | D．discovers |
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| 小题7: | | A．poles | B．boats | C．methods | D．ideas |
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| 小题8: | | A．mountains | B．the sea | C．trees | D．forests |
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| 小题9: | | A．continue | B．stop | C．keep | D．go on |
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| 小题10: | | A．grow | B．plant | C．save | D．cut down |
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| 小题11: | | A．Thus | B．However | C．But | D．Therefore |
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| 小题12: | | A．still | B．even | C．also | D．certainly |
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| 小题13: | | A．too many | B．a few | C．some | D．few |
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| 小题14: | | A．production | B．pollution | C．population | D．pronunciation |
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| 小题15: | | A．work | B．deal | C．solve | D．serve |
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| 小题16: | | A．fruit | B．meat | C．fish | D．grain |
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| 小题17: | | A．feeds | B．increases | C．supplies | D．helps |
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| 小题19: | | A．control | B．born | C．plan | D．reward |
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| 小题20: | | A．nature | B．sea | C．planet | D．forest |
|