Directions: In this section, there are four passages followed by questions or unfinished statements, each with four suggested answers A,B.C and D.Choose the best answer and mark your answer on the ANSWER SHEET.

Passage Two

　　For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), 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 later.In the first place, all this pure of theoretical knowledge, sought only for the purpose of understanding.In order to fulfill the need to understand that is essential 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 that the world was 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 or 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 independence of pure knowledge.Knowledge directly sought 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.Let me recall a well-known example.If the Greek mathematicians had not applied themselves to the investigation of conic section, zealously without concerning about that it might someday be useful, it would not have been possible centuries later to navigate far from shore.Pure knowledge is valuable for its own sake, because the human spirit cannot yield itself to ignorance.But, in addition, it is the foundation for practical result that would not have been reached if this knowledge had not been sought disinterestedly.
The title below that best expresses the ideas of this passage is _____.

A.he had carved his name in the stone

B.he died a hero who had finally conquered the towering precipice

C.he believed that young people would find truth by climbing by the steps he had cut

D.a feather of the bird of truth had fallen upon him