Broadcast: January 14, 2003 By Jill Moss VOICE ONE: This is Phoebe Zimmerman. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program about recent developments in sc

发表于:2018-12-07 / 阅读(43) / 评论(0) 分类 VOA2003(上)-健康资讯

DEVELOPMENT REPORT - Polio Campaign in Africa By Karen Leggett Broadcast: Monday, October 11, 2004 This is Gwen Outen with the VOA Special English Development Report. Health workers in West and Centra

发表于:2019-01-02 / 阅读(33) / 评论(0) 分类 农业与发展

SCIENCE IN THE NEWS - Polio Vaccine Ban in Parts of Nigeria / Safety Laws Urged for India / Two More Elements? By Broadcast: Tuesday, March 02, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in

发表于:2019-01-02 / 阅读(50) / 评论(0) 分类 科技之光

SCIENCE IN THE NEWS - Saying Goodbye to Polio: Not There Yet, but Close By Karen Leggett and Cynthia Kirk Broadcast: Tuesday, December 27, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS in VOA Sp

发表于:2019-01-02 / 阅读(26) / 评论(0) 分类 科技之光

Efforts to eradicate polio have been frustrated by a variety of factors, and unlike smallpox, the disease has defied long-running and expensive efforts to wipe it out. Now, a new study indicates that one of several polio vaccines can be effective at

发表于:2019-01-13 / 阅读(33) / 评论(0) 分类 VOA标准英语2010年(七)月

DEVELOPMENT REPORT - Polio Vaccine 50th Anniversary By Karen Legget and Jill Moss Broadcast: Monday, May 03, 2004 This is Robert Cohen with the VOA Special English Development Report. Fifty years ago,

发表于:2019-01-30 / 阅读(65) / 评论(0) 分类 农业与发展