阅读下列短文,从每小题的四个选项中选出最佳选项。March 14 is a great day for fans of maths. It is celebrated as Pi(π) Day, a day to celebrate the number that many people know very well. The date copies from the first three numbers of Pi(π). March is the third month and the 14th means one and four. Altogether it is 3.14. Pi(π) comes wherever there are circles(圆). Pi has been known for thousands of years and gets its name from a Greek letter, n. The Greeks are believed to be the earliest to use the letter in maths. The first Pi Day was celebrated on March 14,1988.
San Francisco's Exploratorium Science Museum started the event. The museum marks the day with a daylong celebration. March 14 is also the birthday of the famous scientist Albert Einstein. Princeton University, where Einstein lived for many years, celebrates Pi Day as well. March 14,2009, was celebrated as National Pi Day. And March 14,2019 also marked the one- year anniversary(周年纪念[1]) of the death of Stephen Hawking. And how do people celebrate the Pi(π) Day? Maybe you can try these ideas:
Eat or make different kinds of pies(for example, apple pies, cherry pies, and even pizza pies);
Celebrate the day with a pie cut using the mathematical constant(常数) of Pi(π);
Discuss the importance of the letter π;
Watch Life of Pi in cinemas;
Look for the number 3.14 in every place(such as prices and street numbers).