For the word nice, its original meaning was“ignorant”,then chang

For the word nice, its original meaning was“ignorant”,then changed to “foolish”and now it means“delightful, pleasant”.This process is _____ of word-meaning.
A、extension
B、elevation
C、transfer
D、degradation
【正确答案】：B
【题目解析】：从题干看, 该题考查的是词义演变过程，nice 原来的意思是“无知的”，然后又变成“愚蠢的”，现在它的含义是“愉快的”，词义由贬义演变成褒义，所以这个过程是升格（elevation) ，因此B选项为正确。