下面哪种发作类型属于偏头痛等位发作

A．头痛发作后伴眼肌麻痹

B．先偏瘫、麻木和失语数十分钟后发生头痛

C．周期性发生某些症状而无头痛，或与头痛交替出现

D．耳鸣、共济失调，也可有嗜睡状态或跌倒

E．发作迅速，持续1～2h可完全缓解

As I waited for Mike to arrive, I ________ the clock and saw that he was late.[ ]

A. glanced at  

B. stared at

C. glared at  

D. watched over