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Scientists have created a climate model that they say proves human activity is responsible for global warming not only at the North Pole, but at the South Pole as well. The model includes data from Antarctica about which relatively little is known.

发表于:2018-12-08 / 阅读(98) / 评论(0) 分类 VOA标准英语2008年(十月)

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(131) / 评论(0) 分类 VOA2004(下)--雅典奥运

By Cathrine Drew London 12 April 2007 Watch EarthFireIce report A South African man and his British friend have launched a campaign to get people around the world to help fight global warming. They call it the EarthFireIce campaign, and they want pe

发表于:2019-01-31 / 阅读(160) / 评论(0) 分类 2007年VOA标准英语(四月)

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发表于:2019-02-09 / 阅读(240) / 评论(0) 分类 加州语文教材California Treasures G5