问题 单项选择题 A2型题

患者右下后牙区有反复疼痛肿胀史,瘘管流脓,有轻度开口受限。X线可见病变区虫蚀状骨吸收,并有局灶性阻射影。病理表现为明显骨吸收和死骨形成的化脓性病灶,死骨周围有炎性肉芽组织使之与周围组织分开。根据上述描述,该病理诊断为()

A.急性化脓性骨髓炎

B.慢性化脓性骨髓炎

C.根尖周脓肿

D.慢性局灶性硬化性骨髓炎

E.放射性骨髓炎

答案

参考答案:B

单项选择题 A2型题
单项选择题

There is virtually no limit to how one can serve community interests, from spending a few hours a week with some charitable organization to practically full-time work for a social agency. Just as there are opportunities for voluntary service (1) (VSO) for young people before they take up full-time employment, (2) there are opportunities for overseas service for (3) technicians in developing countries. Some people, (4) those who retire early, (5) their technical and business skills in countries (6) there is a special need.

So in considering voluntary or (7) community service, there are more opportunities than there (8) were when one first began work. Most voluntary organizations have only a small full-time

(9) and depend very much on volunteers and part-timers. This means that working relationships are different from those in commercial organizations, and values may be different. (10) some ways they may seem more casual and less efficient, but one should not (11) them by commercial criteria. The people who work with them do so for different reasons and with different (12) , both personal and (13) . One should not join them (14) to arm them with professional experience; they must be joined with commitment to the (15) , not business efficiency. Because salaries are (16) or non-existent many voluntary bodies offer modest expense. But many retired people take part in community service for (17) , simply because they enjoy the work.

Many community activities possible (18) retirement were also possible during one’s working life but they are to be undertaken (19) seriously for that. Retired people who are just looking for something different or unusual to do should not consider (20) community service.

8()

A.before

B.lately

C.never

D.ever