用于风寒感冒，巅顶头痛者：宜用（）
A.柴胡
B.升麻
C.藁本
D.白芷
E.羌活
参考答案：C
电压互感器二次侧为什么必须接地且不能短路？
As she greeted me at the door, my prospective roommate seemed to be the happy and carefree friend I had dreamed before I came to the university.
A．eventual
B．would-be
C．probable
D．prosperous
