- 问题详情:TheU.S.highschooldropoutratehasfalleninrecentyears,withthenumberofdropoutsdroppingfrom1millionin2012toabout750.000in2016,accordingtoanewstudyreleasedonTuesday.Thenumberof“dropoutfactories’’—highschoolinwhichfewerthan60percentoffreshmengra...
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