First impressions are the most lasting. After all, you never get _____ second chance to make _____ first

 impression.     [ ]

A. a; the            

B. the; the

C. a; a              

D. the ; a

患者，男，53岁。经常咳嗽气喘，吐痰色白而清，时常胃脘冷痛，喜暖喜按，口不渴。治疗应首选的药物是（）。

A.茯苓

B.干姜

C.木香

D.丁香

E.花椒