A．Ice dancing requires exact footwork and a keen sense of music.
B．Partner shouldn’t be raised too high or jump during ice dancing.
C．Ice dancing needs conformity with each other and jump.
D．Partner should be lift higher and the other be on the ice all the times.

A．To prevent the students’ road accidents.
B．To relieve the traffic pressure.
C．To save time for the parents and students.
D．To help the parents save money.