— Could you tell me ___________? I must prepare for it.

— Well, it will start at 9:00 tomorrow morning. There is enough time for you.

A. why will the speech start

B. when the speech will start

C. where the speech will start

下列临床表现中最不支持心绞痛诊断的是 ( )。

A．疼痛可在睡眠中发生

B．含服硝酸甘油，疼痛在3～5分钟内缓解

C．疼痛易被运动或情绪激动诱发

D．反复出现的局限性心前区刺痛，每次持续仅2～3秒

E．疼痛在休息时发生，持续1～10分钟