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患者,男性,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线摄影示根内向性吸收,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,有牙袋形成,似牙病垂直型吸收的骨袋,但无溢脓。2年后移植牙松动脱落。牙根吸收的原因最可能有A、供牙储存的情况 B、牙骨质健康状况 C、植入区牙组织健康状况 D、免疫排斥反应 E、细菌感染 发生免疫排斥反应的可能抗原不包括A、移植牙牙膜 B、牙膜组织的蛋白质 C、移植牙牙本质 D、移植牙牙骨质 E、移植牙牙骨质组织的蛋白质 减轻异体牙移植排斥反应的方法不包括A、除尽供牙牙膜和牙髓组织 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
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【单选题】It was the training ________ he had as a young man ________ made him so excellent.
A.
what; that
B.
that; which
C.
that; what
D.
which; that
【单选题】She ______ for 15 years, yet she didn’t know what kind of man she ______.
A.
had married; married
B.
had been married; married to
C.
had been married; had married
D.
married; had married to
【单选题】—Do you often go swimming _______ Sunday mornings? —Yes. Why not _______ with me this Sunday? [     ]
A.
on; go
B.
in; to go
C.
on; going
D.
in going
【单选题】---- Can you tell me why __________? ---- Because I want to help the people there.
A.
do you go to Tibet
B.
did you go to Tibet
C.
you are going to Tibet
【单选题】关于结施6中的后浇带,下列说法正确的是( )
A.
如果采用钢筋全部贯通,该后浇带构造正确。
B.
如果采用钢筋100%搭接,该后浇带构造正确。
C.
不管采用钢筋100%还是全部贯通,该后浇带构造均正确。
D.
不管采用钢筋100%还是全部贯通,该后浇带构造均错误。
【判断题】艺术品投资是一种市场行为,艺术品投资取决与投资者的经济实力。
A.
正确
B.
错误
【单选题】—Could you Tell me __________? —Because I want to help the people there. [     ]
A.
why do you go to Tibet
B.
why did you go to Tibet
C.
why are you going to Tibet
D.
why you are going to Tibet
【判断题】艺术品投资是一种市场行为,艺术品投资取决与投资者的经济实力。()
A.
正确
B.
错误
【单选题】______ do you go home?  At 4:30. [     ]
A.
When
B.
Why
【单选题】What does the title of the passage 'The Unseeing Eye' suggest'?
A.
The old man had very poor vision.
B.
The old man's wife had an eye problem.
C.
The old man failed to see what he should have seen.
D.
The old man's wife was not easy to recogniz
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