下列各项，属经行头痛常见病因的是（）
A.气滞血瘀
B.阴虚血热
C.肝火上逆
D.肾气亏损
E.湿热阻滞
参考答案：C
—Were you at school when it began to rain?
—Yes. I with my teacher at that time.
A．talk
B．will talk
C．was talking
D．am talking
新中国制造的第一架小型运输机是哪一架？
