Every few years, the coal workers ______their lungs X-rayed to ensure their health.[ ]

A. are having        

B. have            

C. have had        

D. had had

最可能的诊断是

A．脑干出血

B．脑室出血

C．内囊出血

D．小脑出血

E．蛛网膜下腔出血