Word-meaning changes by modes of the following EXCEPT________ .

Word-meaning changes by modes of the following EXCEPT________ .
A、extension
B、expansion
C、degradation
D、elevation
【正确答案】：B
【题目解析】：语义变化有四种：extension, narrowing, degradation, elevation, 没有expansion, 因此，答案是B，答案依据在课本第135页到139页。