---DO you have any       for this summer vacation?

---I want to take a trip to Qinghai.

A．programs

B．reasons

C．grades

D．plans

偏头痛最常见的先兆是：（）

A.感觉先兆

B.运动先兆

C.视觉先兆

D.言语先兆

E.感觉合并运动先兆