单选题 Which of the following does NOT belong to the methods of the addition of new words?
A. Acronyms. B. Back-formation. C. Functional shift D. Semantic shift.

【正确答案】 D
【答案解析】新词的添加主要通过以下几种方式：coinage创新词，clipped words缩略词，blending紧缩词，acronyms词首字母缩略词，back-formation逆构词法，functional shift功能转换，borrowing借用。Semantic shift属于词义的变化。