Preserving Nature for Future
Demands for stronger protection for wildlife in Britain sometimes hide the fact that similar needs are felt in the rest of Europe. Studies by the Council of Europe have ___31___that 45 per cent of reptile（爬行动物）species and ___24___ per cent of butterflies（蝴蝶）are in ___32___ of dying out.
European concern for wildlife was outlined by Dr. Peter Baum，an expert in the environment and natural resources division of the council，when he spoke at a conference arranged by the administrators of a British national park. The ___33___ is one of the few areas in Europe to hold the council's diploma（证书）for nature reserves（自然保护区），he was ___34___ that public opinion was turning against national parks，and that those set up in the 1960s and 1970s could not be ___35___ up today.
“No area could be expected to survive both as a true ___36___ reserve and as a tourist attraction. ” he went on. The short-sighted view that reserves had to serve ___37___ human demands for outdoor recreation should be ___38___ _by full acceptance of their importance as places to preserve nature for the future.
“We forget that they are the guarantee of life systems，on which any built-up area ultimately depends. " Dr. Baum went on. “We could manage without most ___39___ products，but we could not manage without nature. However，our natural environment areas，which are the original parts of our countryside，have shrunk（缩小）to mere islands in a spoiled and ___40___ polluted landmass. ”
【第31题】根据文章，选择对应的句子。A. nature;B. heavily;C. immediate;D. set;E. shown;F. said;G. afraid;H. industrial;I. replaced;J. park;K. danger;L. risk
【正确答案】：E
【题目解析】：此句为现在完成时，此处应填动词的过去分词。备选选项中有四个动词的过去分词：replaced意思是“代替，替代”，放在此处句意不通，said和set属于干扰项，shown意思是“表明”，此处应填shown。studies have shown that也属于常见用法，意思是“研究表明”，因此此题应选E。
