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问题 选择题

显微镜视野中出现一个污点，如果移动物镜和玻片标本都不能将污点除去，则可判定该污点可能位于（　　）上．

A．目镜

B．反光镜

C．物镜

D．玻片

答案

用显微镜进行观察时，视野中出现了的污点，污点的位置只有三种可能，目镜、物镜或玻片标本，判断的方法是转动目镜或移动玻片．转动目镜污点动就在目镜，不动就不在目镜；移动载玻片，污点移动就在载玻片，不动就不在载玻片；如果不在目镜和载玻片，那就一定在物镜上．题干中：如果移动物镜和玻片标本都不能将污点除去，则可判定该污点可能位于目镜上．

故选A．

单项选择题 A1/A2型题

患者女，45岁。既往有输血史，因反复出现口舌灼痛1年就诊。查体：双侧腋下各有一个约1.5cm淋巴结，无压痛，移动性好，舌体可见毛状黏膜白斑，不易拭去，心肺腹部查体无异常。行胸片检查提示浸润性肺结核，口腔分泌物找见真菌菌丝及孢子。该患者应高度怀疑哪种疾病 （）

A.先天性免疫功能不全

B.淋巴瘤

C.艾滋病

D.咽部肿瘤

E.肺肿瘤
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单项选择题

Anthropology is the study of human beings as creatures of society. It (1) its attention upon those. physical characteristics and industrial techniques, those conventions and values, which (2) one community from all others that belong to a different tradition.

The distinguishing mark of anthropology among the social sciences is that it includes for serious study other societies (3) our own. For its purposes any social (4) of mating and reproduction is as significant as our own. To the anthropologist our customs and those of a New Guinea tribe are two possible social schemes for (5) a common problem, and in so far as he remains an anthropologist he is (6) to avoid any weighting of one (7) the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has been shaped by any tradition (8) He is interested in a wide (9) of custom that is found in various cultures, and his object is to understand the way in which these cultures change and (10) , the different forms through which they express themselves and the (11) in which the customs of any peoples function in the lives of the (12) .

Now custom has not been commonly regarded as a (13) of any great moment. The inner workings of our own brains we feel to be uniquely (14) of investigation, but custom, we have a way of thinking, is behavior at its most commonplace. (15) , it is the other way round. Traditional custom is a mass of detailed behavior more astonishing than (16) any one person can ever evolve in individual actions. Yet that is a rather (17) aspect of the matter. The fact (18) first rate importance is the predominant role that custom (19) in experience and belief, and the very great varieties it may (20)

3（）

A.of

B.from

C.for

D.than
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