全导联出现高波幅δ活动为背景，仅可见少量α波或者θ波。（）
A.脑死亡
B.纺锤形昏迷
C.α型昏迷
D.δ型昏迷
E.代谢性脑病
参考答案：D
- You look worried. What's the matter?
- I have some problems with my parents. I really don't know_______.
A．who to speak
B．who speaks to
C．who to speak to
D．who speaking to
下列哪些是可支持跨系统移动性的事件（）。
A.A4
B.A5
C.B2
D.B1
