（）or amelioration refers to the

（）or amelioration refers to the process by which words rise from humble beginnings to positions of importance.
A、Extension
B、Narrowing
C、Elevation
D、Degradation
【正确答案】：C
【题目解析】：词意的升格（或改良）指词语从一开始的卑微的地位提升到重要地位的过程。