The little boy, who can play the piano perfectly, is thought to be ________ of a pianist.[ ]

A. somebody  

B. someone

C. something  

D. some one

“读黑格尔的书是治疗失眠最好的药”，是谁说的（）？

A、列宁

B、斯大林

C、黑格尔

D、毛 * *