C

    My name is Rose. I usually get up at six ten in the morning. I always have my breakfast at half past six. I go to school on foot. I am never late（从不迟到）for school.

    I have many lessons in the morning. At about twelve o'clock, I have lunch at school. In the afternoon, I am not busy. After school, I do my homework first, and then I play with my friends.

    In the evening, my parents come back from work（下班）. We have dinner together. I go to bed at half past nine. But my father often works late at night.

京杭运河的淤塞、京广铁路的建成和海运的发展使运河沿线城市发展速度变慢。

下列有关细胞衰老的叙述，错误的是(　　)