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Sharks eat their food by ______？
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A．To find out if he has the flu.B．To find out how to maintain a nutritious diet.C．To f
For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with natural world, and sciences dealing with mankind. Apart from these sciences is philosophy. All this is pure or【C1】______ knowledge, sought only for the【C2】______ of understanding in order to fulfill the need to understand what is intrinsic and consubstantial (同质的) to man. What【C3】______ man from animal is that he knows and needs to know. If man did not know that the world existed, and that the【C4】______ 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 or applications of knowledge are equally necessary for man and are of the greatest importance,【C5】______ they also contribute to【C6】______ him as man and permit him to 【C7】______ a life increasingly more truly human.
【C8】______ even while enjoying the results of technical progress,【C9】______ must defend the primacy and autonomy of our knowledge. Knowledge sought【C10】______ for its practical applications will have immediate and【C11】______ success, but not the kind of important result【C12】______ 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【C13】______ investigation of conic (二次曲线) sections zealously and without the least suspicion【C14】______ it might someday be useful, it would not have been possible【C15】______ later to navigate far from shore. The first man to study the nature of electricity could not imagine that their experiments, carried on because of mere【C16】______ curiosity, would eventually lead to modern electrical technology, without which we can scarcely【C17】______ of contemporary life. Pure knowledge is valuable for its own sake, because the human spirit cannot【C18】______ itself to ignorance. But,【C19】______ it is the foundation for practical results that would not have been reached if this knowledge had not been sought【C20】______ .
【C1】
听力原文： Everyone knows about the Royal Canadian Mounted Police, but (29) nowadays the romantic red uniform. jacket is only worn on special occasions, and the famous horses are rarely seen. So the "Mountie", as a member of this police force is known, is not, in fact, often mounted except on a powerful motor-cycle. (30)He is a member of a very modern and efficient organization.
The Royal Canadian Mounted Police has responsibility for an enormous area, from the U.S. border up to the vast ice-fields and frozen lakes. (30)A mountie may work in the Headquarters building in Ottawa. He may pilot a patrol plane across the snow-deserts in the north. He may be doing customs work at the frontier. He may be in plain clothes watching for s suspicious character at an airport, or he may simply be driving a patrol-car.
There are more than ten thousand men in this force, and it was one of these who was responsible for the arrest of James Earl Ray. Police all over the world were looking for Ray after the murder of Martin Luther King. In June 1968, a group of policemen in Canada were doing routine work with applications for passports. Suddenly one man noticed a photo which looked very much like Ray. The name was different, but the resemblance was so strong that (31) the police started to investigate. They discovered that the man had already gone to Britain. The photograph and the finger-prints were sent to the British police, who arrested Ray at London Airport, when he was just going to get on a plane for Brussels. The murder that had shocked the world was solved by a mountie on Ottawa.
(30)
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
Spending time in a bookshop can be most enjoyable, whether you are a book-lover or merely go there to buy a book as a present. You may even have entered the shop just to find shelter from a sudden shower. Whatever the reason, you can soon become totally unaware of your surroundings. The desire to pick up a book with an attractive dust-jacket is irresistible, although this method of selection ought not to be followed, as you might end up with a rather dull book. You soon become engrossed in some book or other, and usually it is only much later that you realize you have spend too much time there and must dash off to keep some forgotten appointment without buying a book, of course.
This opportunity to escape the realities of everyday life is, 1 think, the main attraction of a bookshop. There are not many places where it is possible to do this. A music shop is very much like a bookshop. You can wander round such places to your heart's content. If it is a good shop, no assistant will approach you with the inevitable greeting: "Can I help you, sir？" You needn't buy anything you don't want. In a bookshop an assistant should remain in the background until you have finished browsing. Then, and only then, are his services necessary. Of course, you may want to find out where a particular section is, but when he has led you there, the assistant should retire discreetly and look as if he is not interested in selling a single book. You have to be careful not to be attracted by the variety of bonks in a bookshop. It is very easy to enter the shop looking for a book on, say, ancient coins and to come out carrying a copy of the latest best-selling novel and perhaps a book about brass-rubbing—something which had only vaguely interested you up till then. This volume on the subject, however, happened to be so well illustrated and the part of the text you read proved so interesting, that you just had to buy it. This sort of thing can be very dangerous. Apart from running up a huge account, you can waste a great deal of time wandering from section to section.
Book-seller must be both long-suffering and indulgent. There is a story which well illustrates this. A medical student had to read a text-book which was far too expensive for him to buy. He couldn't obtain it from the library and the only copy he could find was in his bookshop. Every afternoon, therefore, he would go along to the shop and read a little of the book at a time. One day, however, he was dismayed to find the book missing from its usual place and was about to leave when he noticed the owner of the shop beckoning to him. Expecting to be told off, he went towards him. To his surprise, the owner pointed to the book, which was tucked away in a comer, "I put it there in case anyone was tempted to buy it," he said, and left the delighted student to continue his reading.
Spending time in a bookshop ______.
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