吸烟和吸食毒品，有毒物质首先接触的是下列的哪一项[ ]
A．呼吸道黏膜
B．血液
C．肺
D．大脑
答案：A
Practising Chinese kung fu can not only _____ one's strength, but also develop one's character.[ ]
A. bring up
B. take up
C. build up
D. pull up
“一源而三歧”指的是（）
A.任脉、维脉、脉
B.任脉、督脉、冲脉
C.带脉、维脉、脉
D.带脉、维脉、冲脉
E.任脉、督脉、脉
脉