whiCh oF thE Following stAtEmEnts is truE
A．thE spAnish ArrivED in mExiCo long BEForE thE mAyA CivilizAtion.
B．now, mAny oF thE AnCiEnt mAyAn CitiEs AnD tEmplEs CAn BE visitED By visitors.
C．thE mAyAn priEsts DEvElopED A systEm For mEAsuring ACCurAtEly.
D．in thE 1500s thE mAyA lEFt thEir villAgEs AnD BEAutiFul CitiEs.