单选题 For example, the word" bead" originally means "prayer", but later it refers to "the prayer bead", and finally "small, ball-shaped piece of glass, metal or wood" .It is called (　　).
【正确答案】 A
【答案解析】bead从最初的含义“祈祷”转变为“念珠”，到后来的“水珠、钢珠”，词义已不同于最初的含义，属于meaning shift(词义转移)。而B指词义扩大，C指词义缩小，D指借词，都不符合题意。