患者，男，31岁，身体健康，口腔状况良好，右上4因牙隐裂治疗失败拔除，同时行形态大小相同的异体牙移植，供者是14岁的健康青年因正畸拔除的右上4。移植后1年，X线检查示根周壁内向性吸收，牙骨质、牙本质变薄，牙根变细。临床检查：移植牙Ⅱ度松动，牙龈有充血、水肿，有牙周袋形成，似牙周病垂直型吸收的骨袋，但无溢脓。2年后，移植牙松动脱落。
减轻异体牙移植排斥反应的方法不包括（）
A.除尽供牙牙周膜和牙髓组织
B.供牙电离辐射处理
C.免疫抑制剂处理
D.选择发育未成熟牙
E.组织相容性配型实验
参考答案：D
| 用方框中所给单词或短语的适当形式完成下列句子。 | |
| |
| 1. The man is sitting in the hall, ___________ his wife. 2. Could you please ___________ here? I don't like this smell. 3. It ___________ since last night. 4. Would you mind ___________ the door for me? 5. Liu Ying plays ping-pong as ___________ as Liu Li. 6. There is little milk in the bottle, ___________? 7. Listen! Can you hear a baby ___________ in the next door? 8. In the past, newspapers ___________ it easy for people to get information, but now it is changing. 9. There is a beautiful clock on the wall, ___________? 10. Li Lei ___________ English for 5 years. |