Words involved in conversion are primarily（）.
A、nouns, verbs and adverbs
B、nouns, adjectives and verbs
C、nouns, prepositions and verbs
D、adjectives, adverbs and verbs
【正确答案】：B
【题目解析】：Words produced by conversion are primarily nouns, adjectives and verbs. 通过转类法产生的词大多是名词、形容词和动词。
