问题
单项选择题
患者男性，50岁，因右侧后牙夜间痛3天，冷热加重就诊。检查：右上第一磨牙无龋，松Ⅱ度，颊侧牙龈红肿，牙周溢脓，牙周袋深及根尖，冷热诊激发痛。该主诉牙应诊断为（）
A.慢性牙髓炎
B.急性根尖周炎
C.残髓炎
D.逆行性牙髓炎
E.慢性根尖周炎
答案
参考答案：D
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患者男性，50岁，因右侧后牙夜间痛3天，冷热加重就诊。检查：右上第一磨牙无龋，松Ⅱ度，颊侧牙龈红肿，牙周溢脓，牙周袋深及根尖，冷热诊激发痛。该主诉牙应诊断为（）
A.慢性牙髓炎
B.急性根尖周炎
C.残髓炎
D.逆行性牙髓炎
E.慢性根尖周炎
参考答案：D
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| Mike didn't hand in his homework on Monday morning. He told Mr. Black that after he had breakfast on Sunday, he had a trip with Michael. They had been walking from eight to eleven. Then they had lunch in a country restaurant for two hours. In the afternoon, when he was ready to do his homework, Bob came and asked him to watch an opera. It began at four and ended at six. After he had supper, he listened to music with his MP3 player from seven to eight. Then he turned on the TV, and watched a new TV show. When the show was over, it was already eleven o'clock. He was too tired to do his homework.
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