Inmanycountries,schoolshavelongsummerholidays,withshor...
问题详情： Inmanycountries,schoolshavelongsummerholidays,withshorterholidaysinbetween.However,anewreportsuggestsshorteningschoolholidaystostopchildrenforgettingwhattheyhaveleaduringthelongsummerbreak.I...