单词：ephemerid
- mayfly蜉蝣
- ephemeropteran短生命的昆虫...
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EPT美语 第一级（初高中适用）
The World Health Organization has raised its pandemic alert level from three to four, as health officials around the world take steps to prevent the spread of the swine flu that has caused at least 149 deaths in Mexico and illnesses in several other
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By George Dwyer Washington, D.C. 27 March 2006 watch Hispanic Business report A new report from the United States Census Bureau shows that between 1997 and 2002, Hispanic-owned businesses grew nearly
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By Cathy Majtenyi Nairobi 18 April 2007 A network of aid groups has launched a report Wednesday recommending, among other things, that the U.N. Security Council and the Sudanese government make the protection of children a top priority in peace effor
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By Phuong Tran Praia, Cape Verde 09 March 2007 Located far off the western coast of Africa, the tiny islands that make up Cape Verde are mostly barren volcanic rock. But the lack of natural resources has actually benefited the country in one way: it
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In Zimbabwe more than 400 people have died from an outbreak of cholera and the number of people infected is now believed to be more than 10,000 according to the United Nations. The Zimbabwean government has appealed for aid and blamed the country's
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