单项选择题

Directions: This part is to test your reading ability. There are 5 tasks for you to fulfill. You should read the reading materials carefully and do the tasks as you are instructed.
Task 1
Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 to 40. For each question or statement there are 4 choices marked A ), B), C) and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.

On February 14th many people in the world celebrate an unusual holiday. St. Valentine’s Day, a special day for lovers. Valentines are cards usually red and shaped like hearts with messages of love written on them. Lovers send these cards to each other on that day, often without signing their names. The origin of this holiday is uncertain but according to one story it gets its name from a Christian named Valentine who lived in Rome during the 3rd century A.D. His job was to perform marriages for Christian couples. Unfortunately the Emperor of Rome didn’t allow Christian marriages. So they had to be performed in secret. Finally Valentine was arrested and put into prison. While he was in prison he fell in love with the daughter of the prison guard. After one year the Emperor offered to release Valentine if he would stop performing Christian marriage. Valentine refused and so he was killed on February, 270 A.D. Before he was killed Valentine sent a love letter to the daughter of the guard. He signed the letter "from your Valentine". That was the first Valentine. Today tens of millions of people send and receive Valentines on St. Valentine’s Day. Whether it is an expensive heart-shaped box of chocolates from a secret admirer or a simple hand-made card from a child, a valentine is a very special message of love.

According to the passage, the holiday gets its name from ______.