So what can we conclude from this little disagreement among the researchers? That life span is flexible(有弹性的), but there is a limit, says George Martin of the University of Washington. We can get flies to live 50 percent longer, he says. But a flys never going to live 150 years. Of course, if you became a new species (物种), one that ages at a slower speed, that would be a different story, he adds.
Does Martin really believe that humans could evolve (进化)their way to longer life? Its pretty cool to think about, he says with a smile.
72. What does the story of Jeanne Calment prove to us?
A. People can live to 122.
B. Old people are creative.
C. Women are sporty at 85.
D. Women live longer than men.
73. According to Steve Austad at the University of Texas, ______.
A. the average human life span could be 110
B. scientists cannot find ways to slow aging
C. few people can expect to live to over 150
D. researchers are not sure how long people can live
74. Who would agree that a scientist will become famous if he makes the wildest guess at longevity?
A. Jerry Shay.
B. Steve Austad
C. Rich Miller
【高中英语语法-普通高等学校招生全国统一考试北京卷 2之四】相关文章:
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