题目

I had been rather proud of myself when my friends and family got the ticket, whether it was for speeding, parking or stop sign violations (违反). It was something that happened to others. But last Friday I joined the club. I was asked to do a new project last week. On Friday morning on my way to work, I suddenly remembered that I had spent the past six weeks without considering that I had a week’s vacation planned during that time. I was very disappointed with myself for not remembering it. The truth is that I was not paying enough attention to my driving and I did not come to a co做双凸透镜成像的实验时，当变换凸度不同的透镜时，必须移动蜡烛的位置才能形成清晰的物像，这说明眼球是通过什么来调节看清远近不同的物体的 [　　] A．变更物体的远近位置B．变更视网膜的位置 C．变更晶状体的位置D．变更晶状体的凸度