2. 外语
  3. John R. Wilmoth, a demographer (人口统计学家) at the University of California, Berkeley, has (11) a wealth of (12) on humankind’

John R. Wilmoth, a demographer (人口统计学家) at the University of California, Berkeley, has (11) a wealth of (12) on humankind’

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问题 John R. Wilmoth, a demographer (人口统计学家) at the University of California, Berkeley, has  (11)   a wealth of  (12)   on humankind’s increasing longevity (寿命) over the past two centuries. And this week in Science(美国《科学》杂志), he has some good news: The maximum  (13)   age we can reach too is on the rise. This finding contradicts the common scientific belief that life span has a biological upper  (14)   of 120 years or so. "Whether 115 or 120 years, it is a legend created by  (15)   who are quoting each other," Wilmoth says.
  
John R. Wilmoth, a demographer (人口统计学家) at the University of California, Berkeley, has 11 collected a wealth of 12 data on humankind’s increasing longevity (寿命) over the past two centuries. And this week in Science(美国《科学》杂志), he has some good news: The maximum 13 average age we can reach to is on the rise. This finding contradicts the common scientific belief that life span has a biological upper 14 limit of 120 years or so. "Whether 115 or 120 years, it is a legend created by 15 scientists who are quoting each other," Wilmoth says.
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