She sings_____a nightingale.Aas Blike C both A and B\

She sings_____a nightingale.Aas Blike C both A and B\
She sings_____a nightingale.Aas Blike C both A and B
\

She sings_____a nightingale.Aas Blike C both A and B\
选B.
as 和.一样
like像
她唱歌像夜莺（鸟）一样,不能说她唱歌和夜莺是一模一样的,他们的声音不可能完全一样.

B like 像 介词 后面接名词
她像一只夜莺一样唱歌