科研之友
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<正>Passage 1 In 2009,Time magazine hailed an online math program1 piloted at three New York City public schools,as one of the year’s 50 best innovations.Each day,the software generated individualized math"playlists"for students who then chose the"modality"in which they wished to learn-software,a virtual teacher or a flesh-and-blood one.2 A different
