单词：gene action system (waddington 1962)
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PEOPLE IN AMERICA - Marilyn Monroe, 1926-1962: America's Most Famous Sex Symbol VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with the VOA Special English program PEOPLE IN AMERICA. Today we tell about movie star Marilyn Monroe. She
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Marilyn Monroe, 1926-1962: America's Most Famous Sex Symbol The beautiful movie star had an exciting but tragic life. VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with the VOA Special English program, People in America. Today we te
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This is Scientific Americans' 60-Second Science. I am Cynthia Graber. This'll just take a minute. Air pollution is bad for our health, but scientists say we don't know much about the long-term effects. So researchers in Canada and the Netherlands dec
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A study looks at mutations that seem to play a part in extending longevity, while limiting growth. Transcript of radio broadcast: 10 June 2008 This is the VOA Special English Health Report. Five women in Rolla, Missouri, all at least 100 years old S
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VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith with People in America in VOA Special English. Today, we tell about the woman who was the most influential wife of any American president, Eleanor Roosevelt. (MUSIC) VOICE ONE: Eleanor
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People in America - Eleanor Roosevelt, 1884-1962: She Was the Most Influential Wife of Any American President STEVE EMBER: Im Steve Ember. SHIRLEY GRIFFITH: And Im Shirley Griffith with People in America in VOA Special English. Today, we tell about t
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