Three centuries later, shortly before the birth of Christ, Egypt was still ruled by a living goddess, Cleopatra, a Greek 1) descended from one of Alexander’s generals. She looked back to the Golden

发表于:2018-11-28 / 阅读(158) / 评论(0) 分类 疯狂英语2002年

Mosquitoes, Not Birds, Made West Nile National In 1999 West Nile virus infected its first American, in New York. By 2004, the disease had spread across the country. Researchers speculated that, for the disease to spread so far so quickly, birds must

发表于:2019-01-02 / 阅读(87) / 评论(0) 分类 60秒科学

By David McAlary Washington 16 May 2007 Scientists say West Nile virus is killing large numbers of birds across North America. The organism has devastated big proportions of several bird species that commonly populate town and city suburbs throughout

发表于:2019-01-07 / 阅读(56) / 评论(0) 分类 2007年VOA标准英语(五月)

A study in rural Nepal found a greater chance that babies would survive their first month. Transcript of radio broadcast: 08 July 2008 This is the VOA Special English Health Report. A new study in rural Nepal shows the value of washing hands with so

发表于:2019-01-07 / 阅读(37) / 评论(0) 分类 VOA慢速英语2008年(七)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? If you're worried about news reports of West Nile virus, you might want to go take a census of the birds in your backyard. Because certain species of birds actually

发表于:2019-01-08 / 阅读(45) / 评论(0) 分类 Scientific American(十)月

by Jill Moss Broadcast: July 23, 2003 This is Bill White with the VOA Special English Health Report. A medical company in Australia, PanBio, has developed a new test for West Nile 1)virus. The test ex

发表于:2019-01-09 / 阅读(73) / 评论(0) 分类 VOA2003(下)-环境与健康