龙骨、牡蛎同用的方剂是()
A.羚角钩藤汤
B.镇肝息风汤
C.朱砂安神丸
D.天麻钩藤饮
E.大定风珠
参考答案:B
The financial crisis has put the world economy in a difficult _________.
A.occasion
B.condition
C.evaluation
D.situation
下列代表一级域名的是( )。
A.ac
B.hk
C.jp
D.uk