气虚感冒的代表方剂是（）
A.参苏饮
B.柴葛解肌汤
C.玉屏风散
D.补中益气汤
E.黄芪桂枝汤
参考答案：A
The twins _____ good at sports.[ ]
A. are both
B. both are
C. are all
D. all are
简述拓拔鲜卑的先祖石室的特点
