{{B}}quEstions 15—18{{/B}}

A、in thE DEgrEEs whiCh ArE rECEivED in A univErsity.
B、in thE AgE whEn A stuDEnt EntErs A univErsity.
C、in thE CoursEs whiCh ArE oFFErED in A univErsity.
D、in thE timE whEn gEnErAl EDuCAtion is ComplEtED、