—When did your father stop smoking?
—In 1999, the year I was born.
A:put up
B:think up
C:mix up
D:give up
关于弹力和摩擦力的关系,下列说法正确的是( )
《西游记》中有许多脍炙人口的故事,如三打____、大闹____、真假____、三借____。