To know the value of one year, ask a student who has failed in a final exam.To know the value of one month, ask a mother who has given birth to a baby.
To know the value of one week, ask an editor (编辑) of a weekly newspaper.
To know the value of one hour, ask a hungry child the taste of chicken.
To know the value of one minute, ask a person who has missed the train, bus or plane.
To know the value of one second, ask a person who has survived from an accident.
To know the value of one millisecond (毫秒), ask the person who has won a silver medal in the Olympics.
Time waits for none of us. Please treasure every second you have!
To know the value of one millisecond, we should ask the ______.