患儿最可能的致死原因是

A．惊厥持续状态

B．脑神经受累

C．括约肌功能障碍

D．呼吸肌瘫痪

E．充血性心力衰竭

The other day, my father drove his car at ____ I thought was a dangerous speed. [      ]

A. as

B. that

C. which

D. what