At the meeting, the people were ____by the kindness and natural beauty of his mother in spite that there

is a scar in her face.    [ ]

A. impressed    

B. surprised    

C. excited      

D. comforted

患者主诉：一侧后牙嵌塞食物已半年。查：右上颌第一磨牙近中邻面龋，探敏，叩（-），冷测正常牙面同对照牙，进入龋洞时引起疼痛，去除刺激立即消失

诊断最可能是（）

A.中龋

B.深龋

C.慢性牙髓炎

D.牙本质敏感症

E.急性牙髓炎