单词：gene cluster (demerec &hartman 1959)
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1.Oh, hello, Miss Hartman! So you ‘re back already. Where is Miss Tomora? 2.She is still in Tokyo. She is stay with her parents. 3.Oh, I see. Is she all right? 4.Yes, she is fine. 5.Well, how was yo
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By Melinda Smith Washington, DC 14 September 2006 watch Alzheimer report Researchers say it may soon be possible to scientifically diagnose Alzheimer's disease, without having to wait for autopsy confirmation after the patient has died. Clinical tri
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People in America - Gene Kelly, 1912-1996: His Movies Made Dance Popular in America SHIRLEY GRIFFITH: I'm Shirley Griffith. STEVE EMBER: And I'm Steve Ember with the VOA Special English program, People in America. Every week we tell about a person im
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The drive to develop a battery to power automobiles, without using petroleum, is also behind the effort to develop an electric powered airplane. New designs for electric aircraft were recently unveiled at the Experimental Aircraft Association's (EAA)
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AUDIE CORNISH, HOST: People complain about nursing homes a lot - the staffing, the food. The list goes on. But this story is about the top complaint, involuntary discharge - people getting kicked out. NPR's Ina Jaffe covers aging. She brings us this
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1959: The Year That Changed Everything A crowd gathers in New York's Times Square to usher in the New Year, 1959. The importance of what future met them that year is still being debated. How Significant Will 2009 Appear in the Lens of History? Jeff G
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