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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
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英语作文 130words 要包含以下内容 1.过去，拥有大学文凭就意味着可以找到一个好工作 2.这种情况已经发生了很大变化 3.如何面对这一深刻的变化 About a decade ago, university students could find satisfactory and enviable jobs after their graduation. But now,
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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
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
VOA标准英语2011年(九月)
Tunis Conference Aims to Pressure Syria's Assad on Aid, Political Change The officials are gathering for the first meeting of what is now called the Friends of the Syrian People -- a movement that came in reaction to the Russian and Chinese vetoes of
VOA标准英语2012年(二月)
Libya Faces Economic Challenges in Post-Gadhafi Era Moammar Gadhafi is dead, but Libyans still face many difficulties now that their long time leader is gone, including how to repair a battered economy. Before the uprisings, Libya produced roughly 1.
VOA标准英语2011年(十月)