Kate has a headache and she_____see a doctor.     [ ]

A. can          

B. should        

C. could        

D. shall

X线胸片示肿块有空洞形成，同侧或对侧肺野有斑片状或索条状阴影，常见于()

A．急性肺脓肿

B．肺结核

C．肺囊肿

D．肺癌

E．脓胸