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标题: 四级练习2015.04.11 [打印本页]

作者: Rebecca949    时间: 2015-4-14 09:30     标题: 四级练习2015.04.11

[audio]http://sound.yywz123.com/tingbbs/cet4/cet420150411.mp3[/audio]



In many countries today,laws protect wildlife.In India the need for such protection was realized centuries ago.About 300 B.C. an Indian writer described forests (1)______________________.The killing of game beasts was carefully supervise.
Some animals were fully protected.Within the forest,nobody was allowed to cut timber,(2)________________________.
Animals that became dangerous to human visitors were trapped or killed outside the park.So that other animals would not become uneasy.The need  for wildlife protection is greater now than everbefore.About a thousand species of animals are in danger of extinction and the rate at which they are being destroyed has increased.Within mammals,for instance,(3)______________________________.
From A.D. 1 to 1800,the rate was about one species every fifty years.Everywhere,men are trying to solve the problem of preserving wildlife while caring for the would's growing population.




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作者: longyuan    时间: 2015-4-16 11:36

that some what like national park today
burn wood for charcoal trap animal for their foster
the rate fo extinction is now about one species every year.




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