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D
