阅读下列短文，从每题所给的A、B、C和D项中选出最佳选项。
The value of time
To realize the value of one year,
Ask a student who has failed a final exam.
To realize the value of one month,
Ask a mother who has given birth to a premature (早产的) baby.
To realize the value of one week,
Ask an editor (编辑) of a weekly newspaper.
To realize the value of one hour,
Ask the lovers who are waiting to meet.
To realize the value of one minute,
Ask a person who has missed the train, bus or plane.
To realize the value of one second,
Ask a person who has survived (幸存) an accident.
To realize the value of one millisecond,
Ask the person who has won a silver medal (银牌) in the Olympics.
Time waits for no one.
Treasure (珍惜) every moment you have.
