This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one

发表于:2018-12-24 / 阅读(64) / 评论(0) 分类 Scientific American(五)月

Remembering 2001: A Space Odyssey 50 Years Later It was 50 years ago that the science fiction film 2001: A Space Odyssey opened in theaters across the United States. The film, directed by Stanley Kubrick, was based on a book by Arthur C. Clarke. The

发表于:2019-01-03 / 阅读(64) / 评论(0) 分类 2018年VOA慢速英语(七)月

Angela Merkel was born in Hamburg in 1954. She became Germanys first female Chancellor and the first from communist East Germany in 2005. Forbes magazine listed her as the most powerful woman in the world in 2006 and 2007. Western media often dub her

发表于:2019-01-11 / 阅读(69) / 评论(0) 分类 世界名人简介

This is the VOA Special English Agriculture Report. Sorghum farmers in eastern Uganda, working with scientists, have tested some lower-cost ways to improve their soil. Little rain and poor soil fertility are problems in that area, as in other parts

发表于:2019-01-11 / 阅读(64) / 评论(0) 分类 VOA慢速英语2007年(六)月

By Margaret Besheer United Nations 24 September 2009 President Barack Obama addresses the United Nations General Assembly, New York, 23 Sep 2009 World leaders addressing the U.N. General Assembly underscored issues of domestic and international conc

发表于:2019-01-13 / 阅读(58) / 评论(0) 分类 VOA标准英语2009年(九月)

GadhafiLoyalistsFleeinConvoytoNiger Reports that a large convoy of Moammar Gadhafi's supporters has fled Libya for Niger have angered many in the Libyan capital. Citizens want to see their former leader and those around him facing justice at home. A

发表于:2019-01-13 / 阅读(77) / 评论(0) 分类 VOA标准英语2011年(九月)