Generally speaking, universities must choose elective courses. Because the credit system is widely used in universities now, if you don't take elective courses, you can't graduate if the credits can't meet the graduation requirements of the school.

Credit system is an educational model, which is a comprehensive teaching management system with course selection as the core and teacher guidance as the auxiliary, and the quality and quantity of students' learning are measured by grade points and credits. Together with the class system and tutorial system, it is called the three major educational models. /kloc-At the end of 0/9, the credit system was first established in Harvard University. 19 18 Peking University took the lead in implementing the "course selection system" in China. 1978 some qualified universities in China began to try out the credit system, and now the credit system reform has been fully promoted in domestic universities.