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  3. For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world

For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world

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问题     For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world ( physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge). Apart from these sciences is philosophy about which we will talk shortly.
    In the first place, all this is pure or theoretical knowledge, sought only for the purpose of understanding, in order to fulfill the need to understand what is essential and substantial to man. What distinguishes man from animal is that he knows and needs to know. If man did not know that the world existed, and the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn’ t be man. The technical aspects of applications of knowledge are equally necessary for man and are of the greatest importance, because they also contribute to defining him as man and permit him to pursue a life increasingly more truly human.
    But even while enjoying the results of technical progress, he must defend the primacy and independence of pure knowledge. Knowledge sought directly for its practical applications will have immediate and foreseeable success, but not the kind of important result whose revolutionary scope is in large part unforeseen, except by the imagination of the Utopians. Let me recall a well-known example. If the Greek mathematicians had not applied themselves to the investigation of conic sections, zealously and without the least suspicion that it someday be useful, it would not have been possible centuries later to navigate far from shore. The first men to study the nature of electricity could not imagine that their experiments, carried on because of mere intellectual curiosity, would eventually lead to modem electrical technology, without which we can scarcely conceive of contemporary life. Pure knowledge is valuable for its own sake, because the human spirit cannot resign itself to ignorance. But, in addition, it is the foundation for practical results that would not have been reached if this knowledge had not been sought disinterestedly.
The Greeks who studied conic sections
选项 A、invented modem mathematical applications
B、were interested in navigation
C、were unaware of the value of their studies
D、were forced to resign themselves to failure
答案C
解析 第三段讲了Greeks从事conic sections研究，但当时他们只是狂热地追求知识，没有意识到数世纪后他们的知识能够应用于航海事业。
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