— I am terribly sorry, sir. I thought it was a parking place.   

—  ______. Here is your ticket. [ ]

A. It doesn't matter          

B. You are right

C. I can't agree with you      

D. Sorry, that's no excuse

变速器的功用有（）

A.改变传动比，扩大驱动轮转矩和转速变化范围

B.发动机旋转方向不变的前提下，使汽车能倒退行使

C.利用空挡，中断动力传递，以便发动机能够启动、怠速

D.便于变速器换档或进行动力输出