A volcano in Iceland had been dormant for more than 180 years. But then a few weeks ago, this started. The volcano is erupting, and some scientists say it could last for more than a year. That's about how long it went the last time this happened,th

发表于:2018-12-20 / 阅读(80) / 评论(0) 分类 CNN2010年(四)月

By Dan Robinson Capitiol Hill 16 March 2007 Former undercover CIA officer Valerie Plame, who has been at the center of a controversy involving the role White House officials played in revealing her identity, has testified in public for the first tim

发表于:2019-01-08 / 阅读(91) / 评论(0) 分类 2007年VOA标准英语(三月)

Climatologists are warning that an El Nino weather pattern, which can spark severe floods, forest fires and droughts, could develop in the coming weeks across the Asia-Pacific region. Heavy early morning fog hangs over Sydney Harbor Bridge, 04 Jun 2

发表于:2019-01-13 / 阅读(65) / 评论(0) 分类 VOA标准英语2009年(六月)

Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani

发表于:2019-01-14 / 阅读(95) / 评论(0) 分类 VOA标准英语2011年(四月)

By Melinda Smith Washington 15 August 2007 The Western diet, consisting of high fatfoods, is not beneficialfor cancer patients Worldwide statistics show that colon cancer kills more than 600,000 people every year. Now, a new study confirms that diet

发表于:2019-01-16 / 阅读(92) / 评论(0) 分类 2007年VOA标准英语(八月)

By Jim Malone Washington 18 April 2007 Authorities in Virginia are slowly gathering and revealing information about Cho Seung Hui, the university student who police say was responsible for the worst mass-shooting spree in U.S. history. VOA National c

发表于:2019-02-05 / 阅读(93) / 评论(0) 分类 2007年VOA标准英语(四月)