We have been told that under no circumstance_____ the telephone in the office for personal affairs.

A．may we use

B．we may ring

C．we could borrow

D．did we answer

颈内动脉系统TIA特征性症状

A．短暂性全面性遗忘症

B．跌倒发作

C．眼动脉交叉瘫

D．眩晕

E．Horner征交叉瘫