第7题: [单项选择]血管扩张充血,通透性增加,组织水肿,沿着血管壁有白细胞游出和纤维蛋白渗出的变化见于() A. 急性浆液性牙髓炎 B. 急性化脓性牙髓炎 C. 慢性闭锁性牙髓炎 D. 慢性溃疡性牙髓炎 E. 慢性增生性牙髓炎 参考答案:A 答案解析:此题为牙髓炎病理变化的判断题。急性牙髓炎时,血管扩张充血,通透性增加,液体成分渗出,组织水肿,水肿液集聚于微血管周围和结缔组织间,沿着血管壁有白细胞游出和纤维蛋白渗出,成牙本质细胞层有变性破坏。这时称
第12题: [单项选择]{{B}} Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Because the policeman stopped him. B. Because the driver charged too much. C. Because the driver drove him to a wrong place. D. Because he had been rubbed. 参考答案:B 答案解析:[听力原文]
M: I was so angry when the taxi driver tried to overcharge me that I called a policeman.
W: