题目

On the first day of my new high school, I almost had a nervous breakdown. Everything about the school seemed so difficult. When I got home, my parents said, “You're nervous and that's okay. Everyone is afraid of high school.” I denied it. I wanted to be strong, so I refused to let anyone know about my fear, even my closest friends.On the first day I was late for every class and was constantly lost. The school seemed like a puzzle that I couldn't figure out. Was this how the whole year was going to be? I didn't think I could rise to this challenge, especially carrying a huge backpack that I15．李斯特氏菌是一种胞内寄生性细菌，其产生的InIC蛋白可抑制人类细胞Tuba蛋白的活性，使细胞更易变形而有利于细菌的转移．下列有关叙述正确的是（　　）A．Tuba蛋白和InIC蛋白的合成均需要内质网进行加工B．该菌在生态系统中所处的层次属于群落C．该菌不能以有丝分裂的方式完成细胞增殖D．该菌的线粒体可以分解葡萄糖释放CO2