Words in a sentence are organized into groups of lexical______,

Words in a sentence are organized into groups of lexical______, commonly known as parts of speech. ()
A、verbs
B、nouns
C、phrases
D、categories
【正确答案】：D
【题目解析】：(P72):词可以归入不同的词汇类别,通称作词性。语言中的词分为主要词类和次要词类。