By analysing the genes of centenarians, scientists found that
A. environment and lifestyle. contribute much to longevity.
B. centenarians" genes are the same as other people.
C. many genetic variants may identify centenarians.
D. 19 genetic profiles of centenarians are different from others.
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本讲提到，实施乡村振兴战略，要巩固和完善农村基本经营制度，使承包地的确权登记颁证延长40年。()
各地区要深刻认识特色小镇和小城镇建设的重要意义，将其作为深入推进供给侧结构性改革的重要平台，以及推进经济转型升级和新型城镇化建设的重要抓手，切实抓好组织实施。()
In paragraph 4, the author discusses
A. six indicators that might reveal a boss" narcissism.
B. the reason why a boss might be unwilling to be surveyed.
C. how to use an index of narcissism to conduct surveys.
D. a way of improving survey results in the studies of narcissism.
Larry Ellison is mentioned in the first paragraph to show that
A. some corporate chiefs like to compare themselves to God.
B. many corporate chiefs are notorious for being selfish.
C. egotism of a boss is fundamental to the success of a firm.
D. a boss" narcissism might have an effect on his business.
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