单词：spaniotoma multiannulata
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在美国黄石国家公园，曾经栖息着土生土长的狼群，直到有一天，狩猎者将它们驱逐殆尽。然而到了 1995 年，（由于一个激进的管理项目）狼群开始重新回归，一些有趣的现象出现了：黄石国
TED公开课:生态谜云
新编英语教程第五册unit03_2_beginning_of_the_end_for_antibiot
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. The Patriot Act and the Bioterrorism Preparedness Act were passed in 2001 and 2002. These laws in part cover research on pathogens and toxins thought to
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By Gilbert da Costa Abuja 23 May 2007 Before the deadline for petitions challenging April's presidential vote, at least seven opposition candidates have filed the necessary documents. For VOA, Gilbert da Costa in Abuja reports that the opposition is
2007年VOA标准英语（五月）
AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- we talk with the author of a book called Spanglish: The Making of a New American Language. RS: Ilan Stavans is a professor of Latin American and Latino Culture at Amherst Colleg
英语单词大师-Word Master
在外国如何打出租车Takeataxi A： Manhattan Square， please. B： All right， sir. When are you supposed to be there？ A： Id like to go around the city， if you dont mind. －请到曼哈顿广常 －好的，先生。要求几点到。
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