The English vocabulary can be classified by different criteria a

The English vocabulary can be classified by different criteria and for different purposes. Words may fall into the content words and functional words by _____.
A、origin
B、notion
C、use frequency
D、symbolic meaning
【正确答案】：B
【题目解析】：英语词汇可以根据不同的标准和目的进行分类。根据概念，词可以分为实词和虚词。