摘要
Here is some good news for those who need an extra(额外)day to catch up on sleep—2016 is a leap year.This important thing that occurs every four years means that instead of the365 days,the year will have 366 days.Since the extra day is added to the shortest month of the year,February will have 29 days!
Here is some good news for those who need an extra（额外）day to catch up on sleep-2016 is a leap year.This important thing that occurs every four years means that instead of the365 days,the year will have 366 days.Since the extra day is added to the shortest month of the year,February will have 29 days!
