In English the most productive type of conversion is conversion A．from verb to adjective. B．from adjective to noun. C．from noun to adjective. D．from noun to verb.
A.from B. B．from C. C．from D. D．from E.
【参考答案】
D 英语中，构词能力最强的词类转化法是D(从名词到动词的转化)。从名词到动词的转化的例子有：radio(n.)→......