The research, reported in the journal Cell Reports, may explain why it has proved so difficult to identify single genes(基因) responsible for the long lives enjoyed by humans. “It’s quite probable that interactions between genes are critical in those fortunate enough to live very long, healthy lives,” said Dr Kapahi. Future research is expected to use mice to see if the same effects occur in mammals.
21.How many years can man live according to Colin Blakemore?
A. 120 years
B. 200 years
C. 130 years
D. 150 years
22. The underlined word “prolonging” in Paragraph 2 probably means_____.
A. limit
B. enjoy
C. shorten
D. lengthen
23.According to the passage, we can know_____.
A. by 2050, the number of over 80s will rise by four percent
B. people can depend on medicine for long life in the future
C. scientists will use mice to do further research
D. the research was carried out by the journal Cell Reports
24.Where can you find this passage?
A. A travel journal.
B. A science fiction.
C. A health report.
D. An economic report.
6
A friendly English Springer Spaniel named Bonnie, who also happens to be deaf, is being praised by her owner for helping him catch a suspected intruder(入侵者,闯入者) in their Salem home.
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