— What are you doing _____vacation?  

— I' m going hiking.[ ]

A. to            

B. for            

C. at              

D. about

具有凉肝息风，增液舒筋作用的方剂是

A．大秦艽汤

B．羚角钩藤汤

C．天麻钩藤饮

D．镇肝熄风汤

E．当归拈痛汤