题目

I was looking through some old photo albums the other day. I had   41__ done that many times before but I felt a sudden _42__ to see them again. I found myself _43__ so many beautiful memories from my childhood. There was my dear Nana giving me a thorough _44__ when I was a newborn baby. There was me and my brother standing in front of the world's ugliest __45_our favorite Christmas tree. There was my beautiful mom __46__ me on her lap. Then the pictures seemed __47__ all of the sudden because my eyes were wet. I just couldn't ___48_ the tears. “What is going on？” I __49__. I ha 排遗（排粪）不是排泄的理由是 ①排出的是未吸收的食物残渣 ②食物残渣排出前未参加细胞代谢 ③排出的粪便是异化作用的终产物 ④排出的食物残渣是新陈代谢的终产物 ⑤排遗是通过消化道把食物残渣排出体外 [　　] A．①③⑤ B．①②⑤ C．①④⑤ D．③④⑤