_______ surprised me most was ________ such a little boy of seven could play the violin so well.

A．That...what

B．What...that

C．That...which

D．What...which

下图为动、植物细胞亚显微结构模式图，请根据图示分析回答：（[]内写数字（）上写文字）

植物细胞特有的细胞器是[]（）[]（）。