单词：bifilar electrom agnetic oscillograph
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By Melinda Smith Washington 30 March 2007 Since the mid-20th century the World Health Organization reports there has been an increase in the rate of breast cancer among women in developed countries. For decades, doctors have urged their patients to d
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What's a Participle? Before we talk about what it means to dangle a participle, we have to answer the question What is a participle? A participle is a verb that acts like an adjective. The present participle form of a verb usually ends with ing. For
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By Michael Bowman White House 02 October 2006 President Bush says prompt U.N. action is required to save lives in Sudan's Darfur region. The president spoke with reporters after meeting with his new special envoy to Sudan, Monday. ----- President Bu
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By Brian Wagner Miami 26 June 2007 Two foreign oil firms have failed to reach a deal with Venezuela to hand over control of their operations in the country as required under the government's nationalization effort. In Miami, VOA's Brian Wagner repo
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ENVIRONMENT REPORT - September 6, 2002: Geckos and Their Sticky Feet By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Geckos are small lizards that live in warm climates. These liza
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