A:唯物论与唯心论的对立
B:唯物论与辩证法的统一
C:辩证法与形而上学的分歧
D:唯心论与形而上学的联系
While her mother was cooking, she ____ ____ ____ a good idea.
①配制培养基
②恒温培养
③高温灭菌、冷却
④接种.