I work as a volunteer for a group that helps the poor in Haiti. I decided to take my son Brain there for a week， hoping to educate(教育) him.

    Before getting out， I told Brain this trip would be tiring and hard. For the first two days， he said almost nothing. Then on the third day， when we were climbing over high rocky mountains(高山)， he turned to me and smiled， “Really hard.”

    After that， a five—year—old girl， wearing a too large dress and broken shoes， followed Brain around. Later he said， “I wish I could speak French.” I was surprised that this was from a boy who always hated French classes.

    However， the moment that really reached my heart occurred in a village in the mountains. I was interviewing(采访) a woman villager for an article. By working hard， she learned to read and write and became one of the leaders of the village.

    Learning her story， Brain was greatly touched. His eyes were wet and there was love and respect(尊重) on his face. He finally understood the importance of my work. When leaving for home， Brain even offered to stay in as a volunteer. This trip was very meaningful.

阅读下文，回答相关问题。

       陶公①性检厉，勤于事。作荆州时，敕船官悉录锯木屑，不限多少。咸不解其意。后正会②，值积雪始晴，听事③前除雪后犹湿，于是悉用木屑覆之，都无所妨。官用竹，皆令录厚头④，积之如山。后桓宣武⑤伐蜀，装船，悉以作钉。
     【注释】①陶公：陶侃，字士行，晋朝鄱阳人，曾任侍中、太尉、荆江二州刺史。②正会，元旦集会。③听事：处理政事的厅堂。④厚头：剩余的比较大的竹块。⑤桓宣武：桓温，曾任大将军、大司马。

细胞凋亡是细胞按照发育程序进行的，死亡的命令早已“编写”在组织发育的“程序表”中。此“程序表”是指(　　)