单词：
单词： 相关文章
Cattle Plague Declared Eradicated Scientists are declaring victory over a deadly animal disease that cattle herders around the world have dreaded for millennia. Rinderpest becomes the second disease in all of human history to be successfully eradicat
VOA标准英语2011年(六月)
DEVELOPMENT REPORT – September 30, 2002: Dog Collars and Leishmaniasis By Jill Moss This is the VOA Special English Development Report. Up to five-hundred-million people are infected each year with
农业与发展
DEVELOPMENT REPORT – April 29, 2002: New Leishmaniasis Drug By Jill Moss This is the VOA Special English Development Report. Doctors from the United States and Saudi Arabia have discovered a new tre
农业与发展
SCIENCE IN THE NEWS -July 2, 2002: Space Shuttle Flights Halted / Researchers Study Icelanders' Genes / Another Reason to Eat Green, Leafy Vegetables Broadcast: July 2, 2002 VOICE ONE: This is Steve E
科技之光
By Barry Newhouse Washington 07 June 2006 watch Youth Obesity report Americans are known for having big appetites and serving oversized meals, but doctors worry about how those habits affect the popul
2006年VOA标准英语（六月）
Are Sleep Problems a Growing Epidemic? New research shows that a lack of sleep is a growing health problem around the world. Sleeplessness has been linked to such chronic illnesses as cardiovascular disease and diabetes. Lack of sleep is not just a p
VOA标准英语2012年(八月)