So leap years are years with three hundred sixty-six days,instead of the usual three hundred sixty-five.This extra day is added to the calendar on February twenty-ninth,sometimes known as leap day.People born on leap day may be called “leapings”.They usually celebrate their birthday on February twenty-eight or March first.
Title:1.____________
Reasons The Earth really takes 356 days,5 hours,48 minutes and 46 seconds to complete its orbit around the sun.
2.____________ is needed to benefit people’s daily life and work.
3.____________ How to deal with the extra 5 hours,48 minutes and 46 seconds.
4.____________ 5.____________ Ways
Ancient
Greeks
and Chinese Producing 6. ___________
every 19 years
7. ___________Producing an extra
day 8.____________
The Pop
Gregory ⅩⅢ Producing a leap day if the year could be divided 9.____________.No leap day when the year ended in two zeros but could not be divided by 400.
Result Leap day 10.____________ and February twenty-ninth was added to the calendar.
Ⅵ.阅读简答
(2017·岳阳一中高三月考)Elephants and people are in competition for space. In much of Africa, elephants are now put in national parks. Elephants suffered a serious and steady decrease in number in the 1970s.This was the same time when scientists were beginning to learn a great deal about elephants and their behavior. Studies through the 1980s and into the 1990s showed a lot about their sounds and methods of communication.
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