How long do you want to live? How many years might be added to a life? 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.（寿命）
“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 live 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 research into 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 the 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 Poon, director of the University of Georgia Gerontology Centre. At present people who could get to that point are not in good health at all.
【小题1】By saying we are knocking at the door of immortality, Michael Zey means .A．they have got some ideas about living foreverB．they are sure to find the truth about long livingC．they believe that there is no limit of livingD．they are able to make people live past the present life span【小题2】Donald Louria's attitude towards long living is that .A．people can live from 120 to 180B．it is possible for humans to live longer in the future C．the human body is designed to last past about 120 yearsD．it is still doubtful how long humans can live【小题3】The underlined word it( in Paragraph 4)refers to .A．using genes as well as nanotechnologyB．the idea of living beyond the present life spanC．a great push D．the conservative estimate【小题4】What would be the best title for this text? A．No Limit for Human LifeB．Science, Technology and Long LivingC．Living Longer or NotD．Healthy Lifestyle and Long LivingA
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(答案→)A
解析：文章介绍随着科技的发展人类可能比现在更长寿，但是有人却是持有怀疑态度的，即使可以长寿，健康状况也是很差的。
【小题1】猜义题。根据短文第一段的内容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.（寿命）可判断出 Michael Zey 的意思是“他们已经获得了使人们永生的主意”选A。
【小题2】细节推断题。第三段“Some have suggested that there is no limit and that peoplecould live to 200 or 300 or 500 years”说明 Donald Louria 认为将来人们的寿命会更长。选B
【小题3】指代题：根据第三段的最后句子Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years和根据第四段的内容可判断出 it 所指的是“人们将来的寿命将会超过现在人的寿命”的观点。选B
【小题4】标题确定题：文章就人类是否能比现在过的长，阐述了不同人的观点，有人持乐观的态度，但是有人却是怀疑的，所以Living Longer or Not 是最好的标题。选C