—What would you send to your sister as the Christmas gift?  

—I haven't decided yet .I     _   send her a handbag.    [ ]

A. shall        

B. may        

C. must

支气管哮喘患者剧烈咳嗽后突然出现气急、胸闷、大汗、呼吸困难、烦躁不安等症状，应考虑

A．哮喘大发作

B．急性左心力衰竭

C．自发性气胸

D．肺炎