5. Mathematics used to __________ with sociology, but with qualitative methodologies in social sciences becoming less popular, statistics has become a course sociologists must take.
数学和社会学在以前没有什么关系,但随着社会科学中的定性方法论越来越不流行,统计学成了社会学家必修的一门课程.
6. All beneficial biological traits __________ one of two categories: those