可知,闰日并不是每四年增加一次,每四年增加一次的话,会使日历延长44分钟,因此that指代的是“每四年增加一天”。故选A。5.主旨大意题。根据“Another main concern for leap day centers on those born on that day.”可知,最后一段介绍了出生在闰日的人要面临的问题。故选C。
Later, on a calendar yet to come (we’ll get to it), it was decreed that years divisible by 100 not follow the four-year leap day rule unless they are also divisible by 400, the JPL notes. In the past 500 years, there was no leap day in 1700, 1800 and 1900, but 2000 had one...
Without a leap day, farmers might have trouble planting in the correct season. Christmas would be in summer. There will be no snow and there will be no feeling of Christmas. Another main concern for leap day centers on those born on that day. It only comes around once every four years....
A.Leroypasseshistestatschool about leapday.B.Leroy's friends throw him a surprise party.C.Leroy's mom takes him for ice cream for his birthday.D.Leroy's dad buys him a new bike for his birthday. 相关知识点: 试题来源: 解析 B
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Leap Day birthdays cause for celebration -- no matter what ageANDREA BROWN THE GAZETTE
WHO CAME UP WITH LEAP YEAR? The short answer: It evolved. Ancient civilizations used the cosmos to plan their lives, and there are calendars dating back to the Bronze Age. They were based on either the phases of the moon or the sun, as various calendars are today. Usually they were “...
Instead, leap years are added to account for the difference. The extra day keeps calendars and seasons from gradually falling out of sync and impacting harvesting, planting and other cycles based on the seasons. Without Leap Days, in 100 years, calendars would be 24 days off, CBS Minnesota ...
If your birthday is February 29, you can celebrate your actual birthdate only once every four years. Sound crazy? It’s not—it means you were born on a leap day. Leap days are important because they help our calendar match up with the same seasons every year. Human-made calendars gener...
The day that you enjoy all the 61. ___ (satisfy) of having all the housework done by a robot might still be a few decades off. But increasingly engineers are saying 62.___ robots are going to make the leap from the factory floor to your family room. Bill Gates once 63. __...