Several different stories are told about the origin of Saint Valentine's Day. One legend dates as far back as the days of the Roman Empire. According to the story, Claudius, the Emperor of Rome, wanted to increase the size of his army. He knew that it would be easier to get young men who were not married to join. Therefore he made a rule that no young man could marry until he had served a certain number of years in the army.
A priest(牧师)named Valentine broke the rule and secretly married a great many young people. Finally, Claudius found out Valentine and put the priest in prison, where he remained until his death on February 14.
After his death, Valentine was made a saint (圣人），and the day of his death was named Saint Valentine's Day. It became the custom for lovers to send each other message on this day. Now Saint Valentine's Day is a time for people to send one another greetings of many kinds.
February 14，Valentine's Day, is sweethearts, day, on which people in love with each other express their tender(温柔的）emotions.
People sometimes put their love message in a heart shaped box of chocolates, or a bunch of flowers tied with red ribbons(带子）. Words of letters may be written on the flower-covered card, or some-thing else. Whatever the form may be, the message is almost the same ： " Will you be my Valentine?"
Valentine was put in prison because __________.

A．he secretly got married

B．he didn't serve in the army

C．he married many young people secretly

D．he broke the rule

This passage mainly tells us about __________.

A．how Valentine died

B．the Emperor of Rome

C．how Valentine's Day is celebrated

D．the origin of Valentine's Day

February 14 is chosen as Valentine's Day because __________.

A．lovers express their tender emotions on this day

B．people want to remember Valentine

C．people send one another greetings of many kinds on this day

D．people want to fix a date for lovers to express their emotions

According to the rule，__________.

A．no young men could get married unless they were old enough

B．young men could marry if they served in the army for several years

C．no one could get married without the emperor's permission

D．young men could many only in the army