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问题 单项选择题 A2型题

男，40岁。体健，吸烟40支/日。临床诊断为慢性牙周炎，经牙周系统治疗及局部药物治疗后效果不理想，口腔卫生状况尚可。应最先考虑影响其疗效的因素是（）。

A.营养因素

B.咬合关系

C.吸烟

D.使用的药物不当

E.工作紧张

答案

参考答案：C

解析：此题考点为考查牙周疾病的危险因素。牙周治疗效果不佳的原因很多，口腔卫生控制不佳是其中的主要因素，但该患者的口腔卫生状况不差，因此主要考虑其他方面的因素，该患者存在一个明显的危险因素即吸烟，且吸烟量很大，吸烟既影响牙周疾病的发病和病情程度，又影响牙周治疗效果，因此正确答案为C。备选答案中的其他方面在题干中并未给出相应信息。

选择题

下列说法中，错误的是（　　）

A．人的牙齿不是上皮组织

B．成人体内有具有分裂能力的细胞

C．成人体内没有具有分裂能力的细胞

D．人的血液是结缔组织
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填空题

Tidiness


Tidiness means keeping things out of sight and yet available when wanted. It implies that there is a (1) for everything and that each thing used finds its way (2) to its place by a continuos process, not by a spasmodic (3) . The process depends, however, upon the drawer, cupboard and storage (4) being provided, for lack of which one things may literally have (5) place to go. Like the perambulator and trolley, the luggage and the golfclubs (6) be homeless. The same may be true of the deck-chairs (7) the bulkier plastic toys. As there is no place for them, it is no (8) telling people to put them away. The architect who thus economises on (9) space is apt to claim that a good-sized sitting-room is (10) result. What advantage is there in that, however, (11) half the living-room has to be used for storage The aesthetic (12) depends, in turn, upon storage space. (13) it may be true that no house ever had cupboards enough, (14) are some houses which have practically no cupboards (15) all. In these our choice must lie between chronic (16) and ruthless destruction. That is not to say, however, (17) cupboard space will itself create tidiness. Some people (18) happier, it would seem, in chaos. There is the question, furthermore, (19) the cupboards themselves are tidy. That (20) has been swept out of sight is no proof, in itself, that everything can be found.
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