Vocabulary can refer to the total number of the words of a language, and it can stand for all the words used （ ）, e.g. Old English vocabulary, Middle English vocabulary and Modern English vocabulary.
Vocabulary can refer to the total number of the words of a language, and it can stand for all the words used （ ）, e.g. Old English vocabulary, Middle English vocabulary and Modern English vocabulary.
A.in a given book
B.in a given dialect
C.by an individual person
D.in a particular historical period
