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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.

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