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问题 单项选择题

猛性龋的临床表现如下，除外

A．龋蚀进展迅速

B．常侵犯全口牙

C．累及多个牙面

D．龋腐质常干硬

E．全身多有疾病

答案

参考答案：D

解析：猛性龋的特点之一是龋蚀进展迅速，临床表现为急性龋，龋腐质呈湿软状，而非干硬。

判断题

动态量在计量期间是随时间而变化的，每次计量所得的是瞬态值，在一段时间内的计量结果可用动态过程或动态曲线来表示，所以动态计量又可称为过程计量。（）
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单项选择题

There is a difference between science and technology. Science is a method of answering (1) questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between (2) phenomena in nature and with establishing theories that (3) to organize these facts and relationships; technology has to do with tools, techniques, and (3) for applying the findings of science. Another (5) between science and technology has to do with the progress in each.

Progress in science (6) the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of (7) and certainty, cannot (8) their own or other people’s likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or (9) people-as did Darwin’s theory of evolution. But even an unpleasant truth is (10) than likely to be useful; besides, we have the choice of refusing to believe it! But (11) so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic aircraft flying overhead; we cannot refuse to breathe polluted air. (12) science, progress in technology must be measured (13) the human factor. The purpose of technology is to serve people—people (14) , not merely some people; and future generations, not merely those who presently wish to (15) advantage for themselves.

We are all familiar with the (16) use of technology. Many people blame technology itself (17) widespread pollution, resource depletion (枯竭) and even social decay in general—so much (18) the promise of technology is " (19) " That promise is a cleaner and healthier world. If wise applications of science and technology do not (20) a better world, what else will

10（）

A.better

B.other

C.less

D.more
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