单词：operations research society of american (orsa)
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This is Scientific Americans 60-Second Science. Im Cynthia Graber, this will just take a minute. For generations, nearly all medical research was done on men. And the assumption was that whats true for men is true for women. Now of course we know tha
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VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith with the VOA Special English program, People in America. Every week we tell about a person important in the history of the United States. Today we tell about Louisa May Alcott. She wrote
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PEOPLE IN AMERICA -September 1, 2002: Louisa May Alcott By Shelley Gollust VOICE 1: I'm Steve Ember VOICE 2: And I'm Shirley Griffith with the VOA Special English program, People in America. Every wee
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Racial discrimination was now banned in Brazil, but prejudice and the belief in white supremacy was still widespread. So there was outrage in the press that black musicians like Pixinguinha should be allowed to represent Brazil when he and his band O
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By Mohamed Elshinnawi Washington 01 June 2007 American Muslim schoolchildren Despite their deep dissatisfaction with the war in Iraq and U.S foreign policy, a major new survey found U.S Muslims--most of whom are immigrants--are largely integrated int
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By Mike O'Sullivan American Samoa 06 October 2009 Recovery efforts are underway in American Samoa, which was struck last week by a major earthquake and tsunami, along with the nearby nations of Samoa and Tonga. One-hundred-77 are confirmed dead in t
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