单项选择题
The calendar used in Australia and in
most other countries was introduced by Pope Gregory XIII in 1582. It provides
for 366 days in those years for which the year number when divided by 4 gives a
whole number (i. e. without a remainder), those years are called leap years. All
other years have 365 days. The Gregorian calendar further specifies that years
whose year number is divisible evenly by 100 are not leap years, unless the year
number is also divisible by 400. In a leap year February has 29 days, whereas in a non-leap year it has 28 days. A decade is a 10-year period, such as I January 1885--31 December 1894. |