Among the following words only “（）” expresses the property of el

Among the following words only “（）” expresses the property of elevation.
A、lust
B、criticize
C、knight
D、silly
【正确答案】：C
【题目解析】：A、D含有贬义；B为批评别人，也与负面内容相关；只有C的词义有升华，knight旧义是servant，升华后为rank below baronet。