A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the

发表于:2018-12-15 / 阅读(145) / 评论(0) 分类 新东方背诵文选

By John Shields Washington, DC 28 February 2006 watch Food vs Fuel report With the world's oil supply increasingly at risk of terrorist attacks and other disruptions, there is an international rush to

发表于:2018-12-16 / 阅读(104) / 评论(0) 分类 2006年VOA标准英语(二月)

When the wind picks up at the foot of the Rockies, there are those who believe they can hear the future. At the National Renewable Energy Laboratory, making alternative power sources competitive with fossil fuels has been a mission since the energy

发表于:2018-12-30 / 阅读(44) / 评论(0) 分类 国家地理2008年

By Brian Padden Washington 25 December 2007 With virtually no oil or natural gas resources of its own, Germany relies on Russia for 20 percent of its oil and one-third of its gas imports. But with Russia displaying a willingness to use oil as a polit

发表于:2019-01-07 / 阅读(24) / 评论(0) 分类 VOA常速英语2007年(十二月)

President Barack Obama says the United States should depend more on so-called clean forms of energy, like wind and solar, and less on oil. The president promoted his alternative energy plan on an Earth Day visit to the central state of Iowa. Preside

发表于:2019-01-13 / 阅读(29) / 评论(0) 分类 VOA标准英语2009年(四月)

China's energy production relies heavily on coal-fired power stations. As the world's highest emitter of greenhouse gasses, China consumed more than 400 million tones of coal last year. As many parts of China have been shrouded in a gray haze over th

发表于:2019-01-19 / 阅读(42) / 评论(0) 分类 英闻天下