单词：three sources of water
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It's actually hotter than it is 5000 miles south in Atlanta Gorgia ,CNN world headquarters.The reason for the seasoning is the heatwave that is stretching over the eastern part of the US, caused by the high pressure weather system that is expanding a
CNN2011年(七)月
Statistics from the Ministry of Water Resources indicate that nearly two-thirds of Chinese cities are suffering from water shortages. Among them, more than 100 are seriously threatened by the problem. Han Ying, an official with the Tianjin municipal
英语杂谈
By Leslie Boctor Cairo 01 August 2006 Roughly 96 percent of Egypt's land mass is made up of desert. Since the time of the pharaohs, the country has relied on a fertile narrow strip along the Nile River to support every aspect of social and economic
2006年VOA标准英语（八月）
Study: No Evidence Hydraulic Fracturing Pollutes Water A new study finds no evidence that the controversial practice to extract natural gas known as hydraulic fracturing is contaminating ground water. The report, Separating Fact from Fiction in Shale
VOA标准英语2012年(二月)
JUDY WOODRUFF: Next: the possibilities of getting more energy through water. Humans have long harnessed the power of water to perform work. In modern time, hydroelectricity, generated by the power of water flowing through turbines at the base of dams
PBS访谈环境系列
The more you know about the various heating systems that are available on the market today, the better able you will be to choose the best one for your home. Obviously, your main goal (besides being comfortable), is to have a heating and air conditio
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