| http://www.w3.org/ns/prov#value | - WASHINGTON ??? Scores in math, reading and science posted by 15-year-olds in the United States were flat, while their counterparts elsewhere ??? particularly in Shanghai, Singapore and other Asian provinces or countries ??? soared ahead, according to results of a well-regarded international exam released Tuesday.While U.S. teenagers scored slightly above average in reading, their scores were avera
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