单词:enantio-selectivity
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经济学人音频版 Unit4:Leaders-Innovation
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By Paula Wolfson White House 24 April 2006 President Bush is making a renewed push for legislation to reform the country's immigration laws, as members of Congress head back to Washington after a holi
By VOA News 24 January 2007 Good evening. James Webb I'm Senator Jim Webb, from Virginia, where this year we will celebrate the 400th anniversary of the settlement of Jamestown - an event that marked the first step in the long journey that has made
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