脑出血（）
A.月经期发作频繁
B.头痛伴剧烈呕吐
C.头痛伴视力障碍
D.头痛伴癫痫发作
E.头痛伴神经功能紊乱者
参考答案：B
The teacher apologized late.
A．to his students to arrive
B．to his students for arriving
C．at his students to arrive
D．at his students for arriving
静息电位大小接近于（）。
A.钠平衡电位
B.钾平衡电位
C.钠平衡电位与钾平衡电位之和
D.锋电位与朝射之差
E.钠平衡电位与钾平衡电位之差
