A:married with, married with
B:married, married
C:married to, been married to
D:married, been married to
⊙O1、⊙O2、⊙O3两两外切,且半径分别为2cm、3cm、10cm,则△O1O2O3 的形状是( )
长期不吃新鲜蔬菜和水果的人,易患( )
如图,0M⊥NP,ON⊥NP,所以ON与OM重合,理由是( )