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  3. Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens

Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens

admin2011-07-31  90
问题     Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span. "I think we are knocking at the door of immortality (永生), "said Michael Zey, a Montclair State University business professor and author of two books on the future. "I think by 2075 we will see it and that’s a conservative estimate (保守的估计)."
    At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in Newark said advances in using genes as well as nanotechnology (纳米技术) make it likely that humans will bye in the future beyond what has been possible in the past. "There is a great push so that people can live from 120 to 180 years," he said. "Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years." However, many scientists who specialize in ageing are doubtful about it and say the human body is just not designed to last past about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.
    Scientists also differ on what kind of life the super aged might live. "It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life?" said Leonard Pooh, director of the University of Georgia Gerontology. Centre. "At present people who could get to that point are not in good health at all."  
By saying "we are knocking at the door of immortality", Michael Zey means______.
选项 A、they believe that there is no limit of living
B、they are sure to find the truth about long living
C、they have got some ideas about living forever
D、they are able to make people live past the present life span
答案C
解析 这个小题考查学生对句子暗含意思的理解。“we are knocking at the door of immortality”中door的意思是“达到或通向某事物的门路或途径”。句子的含义是选项C所表示的 they have got some ideas about living forever.“关于如何能长生不老他们已经有了些认识”。A选项they believe that there is no limit of living的意思是“他们相信生命是无限的”，B选项they are sure to find the truth about long living的意思是“他们一定会找到长寿的真谛”，D选项they are able to make people live past the present life span的意思是“他们能够使人们超越当前的寿命”。这三个选项都与本文论述的人类是否可以长寿这一问题相关，但是都不是本题的答案。
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