构成人体的本原物质是
A.天地之精气
B.元气、宗气、营气、卫气
C.水谷之精气
D.天气
E.地气
参考答案:A
The tree _____________ are green in spring.[ ]
A. leafs
B. leaves
C. leaf
典型霍乱患者,发病后最先出现的症状是
A.畏寒、发热
B.声音嘶哑
C.剧烈腹泻,继之呕吐
D.腹部绞痛
E.腓肠肌痉挛