针刺治疗外感咳嗽兼咽喉肿痛的处方中有（）。
A、少商
B、合谷
C、列缺
D、尺泽
E、肺俞
参考答案：A, B, C, D, E
We' re trying to ring you back, Bryan, but we think we ___your number incorrectly. [ ]
A. looked up
B. took down
C. worked out
D. brought about
黑素细胞数量约占基底层细胞总数的（）
A.5%
B.10%
C.15%
D.20%
