题目内容

在放射治疗后半年至数年内，多数患者唾液分泌减少，牙容易发生猖獗龋，或因拔牙及其他损伤造成伤口长期不愈，可能是____。

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治疗牙髓病和根尖周病的主要治疗方法：____。

溃疡的定义为____坏死或脱落。

牙齿外伤脱落后应放在___中保存。

根据下面材料，回答题。
Preferences Vary on Circumstances of Dying
Among terminally (晚期) ill people, attitudes differ on what they think constitutes a 51 or bad death, the results of a new study suggest.
Dr. Elizabeth. K. Vig of the University of Washington in Seattle and colleagues interviewed 26 men with 52 heart disease or cancer. The men were asked to describe good and bad deaths, and they also answered 53 about their preferences for dying. "In this small study, terminally ill men described good and bad deaths 54," Vig said. "They did not hold the same views about such issues 55 the presence of others at the very end of life or preferred location of death."
Many of the men considered 56 in their sleep to be a good death. The reasons were varied and included not 57 that death was imminent (即将发生的), and that death would be painless. For close to half of the men, a prolonged (拖延的) death was 58 a bad death. Some of the men associated a prolonged death with prolonged pain,59 others thought a prolonged death would be difficult for their families.
Most men said that their 60 were very important to them, but this did not mean that they wanted elatives close at the 61 of death. "Valuing family did not also 62 wanting family present at the very end of life," Vig said, "In fact, some expressed concerns 63 burdening loved ones." For instance, some men were worded about the emotional or 64 impact on their family members, according to the Washington researcher some were worded 65 their need for care would be a burden on their families.
______ 查看材料

A. wrong
B. pure
C. good
D. whole