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问题 单项选择题

熬骨头汤时，为提高骨头中钙质的溶解度，可加入少量( )。

A．盐

B．酱油

C．醋

D．料酒

答案

参考答案：C

解析：如果稍微有点化学常识，可以知道醋是酸性溶液，可以起到溶解钙质的作用。

单项选择题 A型题

量效曲线可以为用药提供什么参考（）

A．药物的疗效大小

B．药物的毒性性质

C．药物的安全范围

D．药物的给药方案

E．药物的体内分布过程
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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

18（）

A. in that

B. as if

C. so that

D. if only
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