The idiom "（ ）" is an example of euphemism.

The idiom "（ ）" is an example of euphemism.
A、as mute as a fish
B、earn one's bread
C、powder one's nose
D、crocodile tears
【正确答案】：C
【题目解析】：本题考查修辞手法。powder one’s nose（上卫生间）是委婉语。as mute as a fish（噤若寒蝉）是明喻，earn one’s bread（谋生）是提喻，crocodile tears（假慈悲）是暗喻。所以本题选C。