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Beijing will launch a pilot program to equip schools and kindergartens with air filtration devices. Smog has been a significant issue in the Chinese capital this winter. I was coughing just now, I always wear mask, from school to home. The air is cho
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Lesson 38 Text A Can't She Type? The well-known banker, T. J. Ellington, was at one time in his younger days the manager of a New York office. His secretary had been with him for many years, and knew
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By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica
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今天我们要学的词是in-depth。 In-depth, 是深入的意思。美国民主党总统参选人奥巴马星期二就种族问题发表讲话。He invited Americans to examine in-depth the most difficult and divisive issue in American history, 他号
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今天我们要学的词是in-depth。 In-depth, 是深入的意思。美国民主党总统参选人奥巴马星期二就种族问题发表讲话。He invited Americans to examine in-depth the most difficult and divisive issue in American history, 他号
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