椎一基底动脉供血不足的TCD主要表现为（）
A.血流速度增快
B.血流速度减低
C.血流速度正常
D.无血流
E.血流速度减低或无血流
参考答案：E
— What about taking a taxi to the Friendship Store?
— I can not ______ it. Let's take the subway instead. [ ]
A.choose
B.pay
C.regard
D.afford
痿证属湿热袭络者除选主穴外还可配用( )
A．阴陵泉、大椎、内庭
B．太白、中脘、关元
C．太溪、肾俞、肝俞
D．尺泽、肺俞、二间
