Thisyearsometwenty-threehundredteenagers(youngpeopleag...
问题详情： Thisyearsometwenty-threehundredteenagers(youngpeopleagedfrom13~19)fromallovertheworldwillspendabouttenmonthsinU.S.homes.TheywillattendU.S.schools,meetU.S.teenagers,andformimpressionsoftherea...