问题
单项选择题
龈袋
A．结缔组织附着出现降低，达釉牙骨质界的根方，称
B．由于牙龈的肿胀或增生使龈缘的位置向冠方移动，结合上皮的位置并未向根方迁移称为
C．结合上皮向根方增殖，其冠方部分与牙面分离形成的袋称为
D．袋底位于釉牙骨质界的根方，牙槽骨嵴的冠方称
E．袋底位于牙槽嵴顶的根方，袋壁软组织位于牙根面和牙槽骨之间，称
答案
参考答案：B
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龈袋
A．结缔组织附着出现降低，达釉牙骨质界的根方，称
B．由于牙龈的肿胀或增生使龈缘的位置向冠方移动，结合上皮的位置并未向根方迁移称为
C．结合上皮向根方增殖，其冠方部分与牙面分离形成的袋称为
D．袋底位于釉牙骨质界的根方，牙槽骨嵴的冠方称
E．袋底位于牙槽嵴顶的根方，袋壁软组织位于牙根面和牙槽骨之间，称
参考答案：B
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A : Hi, how did your exams go? B : I ’m really pleased! I didn’t expect to do well in __1 maths or geography, but _2 _, I got good grades in both subjects. What about you? A : I did 3 well in English. That’s something I’ve always 4 rades in history and art weren’t so good, because neither of those is my favourite subject. What will you study next year? B: I’ve still got a few weeks 5 I have to decide. I’m going to speak to all my teachers and 6 their advice. A: The teachers say that we must decide for ourselves, that none of them can tell us what to do. B: But I have to get some 7 because there are so many 8 and it’s very hard to choose. |