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SSS 2010-03-03

Sometimes scientific discoveries are hidden in museum specimen drawers and old journal articles. In two studies in the journal Science, researchers who went through the stuff in institutional attics offer new insights into the development and diversi

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今天我们要学的词是diversity。 Diversity, 多元。 The school is committed to improve the diversity of its student body, 学校致力于提高学生的多元化。星期一是美国法定假日，马丁.路德金日。 It's a time for peopl

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