C.human’s lifetime will last longer than 75 years
D.all of the changes of aging take place deep inside the body
70.How did Dr. Paul Seagle lengthen the lifetime of rats in his experiment?
A.By limiting the protein in their diet.
B.By cutting the calories in their diet.
C.By resetting their clock of aging.
D.By keeping their physical fitness.
71.What is probably the best title for the article?
A.Two Great Experiments B.The Mystery of Human Life
C.Ways to lengthen Human Life D.The Breakthrough in the Study of Aging
E
Census figures (调查数据) published last Friday indicate that the number of women in management jobs rose by 95% between 1980 and 1990. Most evidenced shows that women are still in the lowest class of management and in the lowest-paying industries.
I first noticed that girls were different from boys when I was about 4 years old. No experiences either in my personal life or in my business life have caused me to change my opinion. Throughout my adult life, however, I have had to evaluate again and again these differences between men and women and how they affect the way men and women relate to one another and to the environment in which they work. Working with women has given me deep understanding I would never have gained in any other way.
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