The word disease once meant discomfort, but now means illness. This is an example of（ ）of word-meaning.
A.generalization
B.degradation
C.elevation
D.specialization
正确答案是D
The word disease once meant discomfort, but now means illness. This is an example of（ ）of word-meaning.
A.generalization
B.degradation
C.elevation
D.specialization
正确答案是D