患者，男性，52岁，右侧后下牙反复疼痛半年，口服消炎药后可缓解但反复发作，近1周，疼痛加重，同侧耳颞区放射痛，自觉牙伸长不能咀嚼．右侧下唇发麻，并出现高热、畏寒、饮食不振。查体：T39．2℃，P108／min，R24／min，急性病容。右面部轻微肿胀，右下颌第一磨牙残冠，探死髓，7654｜牙松动Ⅱ至Ⅲ度、叩痛，冠周溢脓。白细胞总数为10．3×109／L，中性分类为89％
若延误治疗可能发展为（）
A.慢性中央性颌骨骨髓炎
B.慢性边缘性颌骨骨髓炎
C.慢性牙周炎
D.牙槽骨慢性炎症
E.下颌慢性根尖周炎
参考答案：A
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| Early one morning, an old woman was carrying a big basket of cabbages on her hand to the market. She hoped to 1 them to the people from the town. The mountain road was narrow(窄的) and the old woman was walking 2 , because she did not want to have 3 and lose her cabbages. Suddenly she 4 a loud noise, and a bicycle came round the comer. It passed her and went very fast 5 the hill. The old woman had to jump to one side of the 6 so quickly that the basket of cabbages nearly fell into the valley( 山谷). She looked up and saw that a young boy was on the bicycle. He was 7 on without even looking round to see 8 the old woman was all right. The old woman began to shout, "Come back, young man! You dropped something!" When he heard this, the boy stopped the bicycle so suddenly that he 9 fell off his bicycle.Then he turned and began to 10 the bicycle back up to the hill. "What is it!" he asked. "What did I drop?" " Young boy, " the old woman answered, "you dropped your manners(礼貌) . " | ||||
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