A、BECAusE thE pArliAmEnt only supportED oxForD AnDCAmBriDgE.
B、BECAusE only oxForD AnDCAmBriDgE wErE supportED By royAl pAtronAgE AnD AristoCrAtiC monEy.
C、BECAusE oxForD AnDCAmBriDgE wErE thE most importAnt CitiEs inEnglAnD、
D．BECAusE thErE wErE not Enough stuDEnts to BE EnrollED in morE thAn two univErsitiEs.