星状椎

After a year of gut-wrenching losses, stock markets around the world recorded a positive day amid light trading to close out 2008. A trader talks on the phone at the Shanghai stock market on New Year's Eve in Shanghai, China, 31 Dec 2008 Modest gain

发表于:2019-01-06 / 阅读(45) / 评论(0) 分类 VOA标准英语2009年(一月)

By Mil Arcega Washington, DC 14 November 2006 warch Pandemic Impact A specialized information network known as MIDAS, short for Models of Infectious Disease Agent Study, shows an avian flu outbreak could wreak serious havoc on people and economies a

发表于:2019-01-11 / 阅读(76) / 评论(0) 分类 2006年VOA标准英语(十一月)

By Lisa Schlein Geneva 22 March 2007 A new report says the global tuberculosis epidemic has leveled off for the first time since the World Health Organization declared TB a public health emergency in 1993. WHO's Global Tuberculosis Control report fi

发表于:2019-01-13 / 阅读(78) / 评论(0) 分类 2007年VOA标准英语(三月)

Global Infertility Rates Generally Hold Steady The World Health Organization says infertility rates around the world have remained relatively stable since 1990. Almost 50 million couples worldwide were unable to have a child after five years of tryin

发表于:2019-01-14 / 阅读(42) / 评论(0) 分类 VOA标准英语2012年(十二月)

By Chad Bouchard 2-337522 21 January 2007 A farmer carries buckets of water collected from a drying pond in Rembang, Central Java, Indonesia As Indonesia copes with one of its driest rainy seasons on record, a climate change study indicates global wa

发表于:2019-02-02 / 阅读(86) / 评论(0) 分类 2007年VOA标准英语(一月)

By Carol Pearson Washington 18 May 2007 The technology that helps drivers to navigate roads and soldiers to map their positions is now helping doctors repair worn-out knees. The medical procedure is called navigational knee surgery. VOA's Carol Pears

发表于:2019-02-06 / 阅读(94) / 评论(0) 分类 2007年VOA标准英语(五月)