- 问题详情:Thisyearsometwenty-threehundredteen-agers(youngpeopleagedfrom13-19)fromallovertheworldwillspendabouttenmonthsinU.S.homes.TheywillattendU.S.schools,meetU.-agers,andformimpressionsoftherealAmerica.Atthesametime,aboutthirteenhundredAmericanteen-...
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