A: 너 연강이지?
B: 응, 교양 하나. 생과대까지 가야 돼.
in this dialog, "연강" is an abbreviated form of "연속 강의", which means taking two classes continuously.
and "교양" in B means a subject which is not related to one's major. If B is not majoring Biology, then, any class in Biology department can be a "교양".