单选题 The process of word formation by shifting the word class to change the meaning of a word is called ______.
【正确答案】 C
【答案解析】解析：考查词性变换(class shift)。词性变换是指某种具体的实体或概念变为某种方法或属性。这种构词法也叫做零派生(zero—derivation)或变换(conversion)。