听力原文： A calendar is a kind of chart that is used to keep tracks of days, months, and years. The ancient calendars of China were sometimes divided into 12-year cycles. Each year in the 12-year cycle had the name of an animal. There were twelve animals that were used to name the 12 years of the cycle. These animals are the rat, ox, tiger, rabbit, dragon, snake, horse, sheep, monkey, rooster, dog and boar. You can figure out the animal for any year if you remember the animals' names in this order.
There were two common areas of significance that the Chinese calendar was used in. One area of its use was in selecting a marriage partner. For example, a woman who was born in the year of the dog was perfectly suited to a man who was born in the year of the rabbit. Another use for the calendar was in selecting a profession. For example, a person born in the year of the dragon might be good for the medical profession, but not for the legal profession.
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A kind of chart used to keep track of days, months and years.
B. A kind of book used to express days of months.
C. A list of the animal's names.
D. A list of holidays.