单项选择题The job typically involves female jobs, such as waitress, florist, nurse, secretary, receptionist, tutor, babysitter; it refers to ________workers. A、pink- collar B、 white- collar C、blue-collar D、gray- collar
单项选择题乐曲《大八板》是山东琴书的过门曲调，经过老艺人门的加花、变奏改编而来的
