根据文章第二段“I would get up every morning at the orphanage，make my bed just like the little soldier that I had become and then l would get into one of the two straight lines and march to breakfast with the other twenty or thirty boys who also lived in my dormitory.”可知，作者每天像个小军人一样早上起床叠被、排队吃饭然后再和其他一起住的二三十个孩子们一起回到宿舍。这样像军人的生活应该是full of strict rules。因此答案为A。