— How come you are late for school again?        

— ____.      [ ]

A. Because I missed the bus.      

B. By bus and then on foot.      

C. Please excuse me.      

D. It's quite wrong.  

肝豆状核变性()
额叶肿瘤()
急性粒细胞性白血病()
急性颅内出血()
感染性心内膜炎()

A．Roth斑

B．绿色瘤

C．Faster-Kennedy综合征

D．Terson综合征

E．K-F环