单词：praseodymium sesquioxide
单词：praseodymium sesquioxide 相关文章
This is the VOA Special English Health Report. A migraine headache can cause disabling pain. People may not feel back to normal for hours or even days. Migraine headaches are most common among young adults and middle-aged people. In the United State
VOA慢速英语2009年（三）月
By David McAlary Washington 19 December 2006 As we get older, most of us will have more difficulty remembering things, like phone numbers, grocery lists, and most importantly, when to take medications. But a new study shows that mental training for
2006年VOA标准英语（十二月）
U.S. President Barack Obama says he seeks unity at the G-20 economic summit in London, and a new arms deal with Russia. It was a busy day of diplomacy for Mr. Obama as he launched his first overseas trip as president. Britain's Prime Minister Gordon
VOA标准英语2009年(四月)
By Sonja Pace Heiligendamm 05 June 2007 President Bush is in the German Baltic Sea resort of Heiligendamm for the three-day summit of the G-8 group of the world's leading industrial nations. The summit opens Wednesday amid protests and policy differe
2007年VOA标准英语（六月）
By Anjana Pasricha New Delhi 09 March 2006 In India, the holy Hindu city of Varanasi has bounced back to normal two days after it was hit by deadly bomb blasts. An unknown Muslim militant group in Kas
2006年VOA标准英语（三月）
By Pat Harris Washington, DC 09 May 2006 watch Virus report Marburg Ebola Virus The Marburg and Ebola viruses have caused fatal outbreaks in Africa for the past four years. A recent study shows a vacc
2006年VOA标准英语（五月）