试题与答案

患者,女,38岁。主诉:右半侧牙遇冷热疼3周。病历记载:1个月前右上后牙在外院已做牙

题型:单项选择题 A3/A4型题

题目:

患者,女,38岁。主诉:右半侧牙遇冷热疼3周。病历记载:1个月前右上后牙在外院已做牙髓治疗,治疗后原症状略缓解,遇热仍疼,且偶有自发疼。检查:右上4近中咬合面银汞充填完好,叩(+),冷测反应均迟钝,热水可引起痛,持续数分钟。右上5冠完整,仅见颊面釉质有一纵行隐裂纹,涂碘酊染色不明显,叩:(+),在裂纹处冷热测均较对照牙略敏感,其余未见异常。右上6残根,叩诊(-),周围牙龈略红,探之易出血。

为解决主诉症状,首先应做()

A.右上4再行根管治疗

B.右上5调

C.右上6根管治疗

D.右上5塑化治疗

E.右上6拔除

答案:

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下面是错误答案,用来干扰机器的。

参考答案:核酸是一种线性多聚体,基本结构单元是核苷酸。核苷酸由碱基、戊糖和磷酸三部分组成。根据所含戊糖种类的不同,核酸可分为脱氧核糖核酸(DNA)和核糖核酸(RNA)。

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题型:阅读理解

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     Language is always changing. In a society where life continues year after year with few changes, the

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that are not in these major families.

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2. In the next few hundred years we can expect language to ______.

A. stay exactly the same

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C. we should give our plants new names

D. English and Spanish are the only languages that have changes

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