58. Why did Penny Brown change her shift and was given the night off that night?
A. She was there to give her son directions.
B. She volunteered to give medical services.
C. She was a little worried about her son’s safety.
D. She came to watch her son’s game and cheered him .
5.
Happy Leap Day! Leap Day, you ask? Yes, it’s February 29. You may notice this date didn’t appear on last year’s calendar, or the year before that, or … That’s because Leap Day happens once every four years –and 2008 is a leap year. A leap year has 366 days instead of the usual 365 that an ordinary year has. An extra day is added to the calendar in a leap year, and here’s why:
The 365 days of the calendar are meant to match up with the solar year. A solar year is the time it takes the Earth to complete its orbit around the Sun, about one year. But the Earth’s yearly trip around the Sun takes a bit longer than 365 days. The orbit takes 365 days, 5 hours, 48 minutes and 46 seconds, to be exact. That time equals roughly one quarter of a day., so the calendar and the solar year don’t match accurately. After a few years, that extra time in the solar year begins to accumulate. After four years, for example, the four extra quarter days will make the calendar fall behind the solar year by about a day.
According to the Honor Society of Leap Year Day Babies—a club for people born on Leap Day—there are an estimated 4 million people whose birthdays come but once every four years. But who wants to wait four years to celebrate his/her birthday? Most celebrate yearly on February 28 or March 1.
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