①Super time but can't play a game tall and big our guest
②what can your father do he can ride a bicycle
②What can your father do? He can ride a bicycle.
已知P是△ABC所在平面内一点,PB→+PC→+2PA→=0→,现将一粒黄豆随机撒在△ABC内,则黄豆落在△PBC内的概率是( )
下列诗词句或典故描述的主要是物理变化的是 ( )
对下列实验中出现的异常现象分析合理的是( )