选修课,必修课的英文怎么说?

选修课,必修课的英文怎么说?
选修课,必修课的英文怎么说?

选修课,必修课的英文怎么说?
elective course(s)选修课
required/compulsory course(s)必修课

Elective course选修课, required course 必修课

optional subject
compulsive subject

必修课required course选修课selected course