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DEVELOPMENT REPORT - New Vaccine Aids Fight to End Polio By Karen Leggett Broadcast: Monday, October 24, 2005 This is Shep O'Neal with the VOA Special English Development Report. A new kind of vaccine
农业与发展
SCIENCE IN THE NEWS - Fight to End Polio a Story of Unexpected Problems, but Also Progress Over the years, polio experts have had to learn to deal with surprises. Transcript of radio broadcast: 03 March 2008 VOICE ONE: This is SCIENCE IN THE NEWS in
VOA慢速英语2008年（三）月
This is the VOA Special English Health Report. Malaria kills about one million people a year and sickens another two hundred fifty million. Most of the deaths are in young children in Africa. Malaria causes twenty percent of childhood deaths in Afric
2010年VOA慢速英语(十一)月
45 国际小儿麻痹预防运动 DATE=5-7-01 TITLE=DEVELOPMENT REPORT - UN Polio Campaign BYLINE=Jill Moss (Start at 1'01
科技之光
This is the VOA Special English Development Report. An Afghan girl receives a dose of polio vaccine The World Health Organization has begun to use a new vaccine against polio. Officials say it will become a major tool in the campaign to end a disease
2010年慢速英语(一)月
UNITED NATIONS, April 15 (Xinhua) -- A new polio vaccine will be rolled out next week to replace the one which protects against all three strains of wild poliovirus. It marked the beginning of the largest and fastest globally coordinated rollout of a
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