单词:pellagragenic
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SCIENCE IN THE NEWS - Six Medical Researchers Who Gave All to Their Work; in Some Cases, Even Their LivesBy Nancy Steinbach and George Grow Broadcast: Tuesday, October 03, 2006 VOICE ONE : This is SCI
VOICE ONE : This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) VOICE ONE: At the start of the twentieth century, the United States Army had a
Six Researchers Who Gave All to Their Work BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. Im Bob Doughty. FAITH LAPIDUS: And Im Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGHTY: At the start of the
SCIENCE IN THE NEWS - Six Researchers Who Gave All to Their Work BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. FAITH LAPIDUS: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGH
BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. FAITH LAPIDUS: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGHTY: At the start of the twentieth century, the United States Army
SCIENCE IN THE NEWS - Six Researchers Who Gave All to Their Work SHIRLEY GRIFFITH: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Shirley Griffith. CHRISTOPHER CRUISE: And I'm Christopher Cruise. Today, we tell the stories of some medical h