在△ABC中,AB=AC,∠A=60°,点D是线段BC的中点,∠EDF=120°,DE与线段AB相交于点E,DF与线段AC(或AC的延长线)相交于点F.
视觉和听觉形成过程中产生兴奋的部位是( )
Our school wants two good teachers _____ the School Art Festival.