The speech the headmaster made at the school assembly _________ the blueprint of the school's

development made both teachers and students excited.[      ]

A. being concerned

B. to concern  

C. concerned   

D. concerning

患者，男，25岁。突起畏寒发热，右胸痛2天，X线胸片示右下肺叶大片模糊影。可能的诊断是（）

A.葡萄球菌肺炎

B.肺炎球菌肺炎

C.克雷伯菌肺炎

D.肺炎支原体肺炎

E.铜绿假单胞菌肺炎