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听力原文:M: I wish I could see George here.W: He was planning to come, but a moment ago hi
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听力原文:M: How are you doing with your plan?W: No one knows how to do the work correctly,
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听力原文:An almost 100-year-old English textbook might be the earliest such book published
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听力原文:The earliest libraries existed thousands of years ago in China and Egypt where co
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听力原文: Europe produces around 20 million tonnes of sugar each year—much more than it co
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听力原文:Fifty years ago, Milton Friedman proposed a Voucher System to improve American ed