关节软骨的作用是[ ]
A．保护关节头、关节窝
B．促进关节生长
C．减小关节运动时摩擦
D．成年后相互融合牢固关节
C
在口算98÷7时，先算______，再算______，最后算______．
He played the computer game till late last night, ________,early this morning.
A．rather than
B．or rather
C．other than
D．more than
