问题
单项选择题
活髓切断术牙髓的病理变化（）
A.牙髓钙变
B.根管内吸收
C.牙髓活力正常
D.根髓固定纤维化
E.根管口形成硬组织桥
答案
参考答案：D
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活髓切断术牙髓的病理变化（）
A.牙髓钙变
B.根管内吸收
C.牙髓活力正常
D.根髓固定纤维化
E.根管口形成硬组织桥
参考答案：D
| 选出方框内的单词填在横线上，使短文意思通顺。 | |
makes much money. He hopes his son can go to university and (2) him study hard. (3) the young man likes to play computer games. He has to go out when his parents fall asleep. One night, when Robert came back, his father (4) to see him. The old man was very angry and told his son to live upstairs. (楼上) Robert had to go up and down quietly. Of course it troubled (5) . He thought and thought but didn't find a way. Last evening, Robert listened (6) . And he was sure his parents went to sleep, he went out to play computer games (7) his friends. He won some money and was happy. And he got back. He took off his shoes and was going upstairs. He heard a (8) in his parents' bedroom. He stood at the door and saw a man come out. He understood it was a thief. He stopped (9) him at once. The man was very afraid and (10) out all the things he stole in the room. "Tell me how you didn't wake my parents up," said Robert. "Or I'll take you to the police station!" |