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3 Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people need at least some acquaintance with its structure and opera- tion. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist. This book is written for the intelligent student or lay person whose acquaintance with science is superficial; for the person who has been presented with science as a musty store house of dried facts; for the person who has been presented with science as the production of gadgets; and for the person who views the scientists as some sort of magician. The book can be used to supplement a course in any science, to accompany any course that attempts to give an understanding of the modern world, or independently of any course—simply to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is, who scien tists are, and what they do. It will give them an awareness and understanding of the rela tionship between science and our culture and an appreciation of the roles science may play in our culture. In addition, readers may learn to appreciate the relationship between scien tific views and some of the values and philosophies that are pervasive in our culture. We have tried to present in this book an accurate and up-to-date picture of the scientif ic community and the people who populated it. That population has in recent years come to comprise more and more women. This increasing role of women in the scientific subculture is not an unique incident but, rather, part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contribu tions. In discussing these changes and contributions, however, we are faced with a lan guage that is implicitly sexist, one that uses male nouns or pronouns in referring to un specified individuals. To offset this built-in bias, we have adopted the policy of using plural nouns and pronouns whenever possible and, when absolutely necessary, alternating he and she. This policy is far from being ideal, but it is at least an acknowledgment of the in adequacy of our language in treating half of the human race equally. We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as do many other scientists, that we shouldn’t take ourselves too seriously. As the reader may observe, we see science as a delightful pastime rather than as a grim and dreary way to earn a living. The book mentioned in this passage is written for readers who______.
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The universities are schools of education, and schools of research. But the primary reason for their (S1) __________ is not to be found either in the mere knowledge (S2) __________ to the students or in the mere opportunities for research (S3) __________ to the members of the faculty. The (S4) __________ for the existence of a university is that it preserves the connection between knowledge and the (S5) __________ for life, by uniting the young and the old in the (S6) __________ consideration of learning. The university imparts information, but it imparts it imaginatively. At least, this is the function which it should (S7) __________ for society. A university which fails in this respect has no reason for existence. This atmosphere of excitement, arising from imaginative consideration, transforms knowledge. A fact is no longer a bare fact: it is invested with all its possibilities. (S8) __________. Imagination is not to be divorced from the facts: it is a way of illuminating the facts. It works by eliciting the general principles which apply to the facts, and then by an intellectual survey of alternative possibilities which are consistent with those principles. (S9) __________. Youth is imaginative, and if the imagination be strengthened by discipline this energy of imagination can in great measure be preserved through life. (S10) __________. S8
“可供出售金融资产”贷方的期末余额，反映企业可供出售金融资产的公允价值。( )
4 Next to Sir Andrew in the club-room sits Captain Sentry, a gentleman of great cour age, good understanding, but invincible modesty. He is one of those that deserve very well, but are very awkward at putting their talents within the observation of such as should take notice of them. He was some years a captain, and behaved himself with great gallantry in several engagements and at several sieges; but having a small estate of his own, and being next heir to Sir Roger, he has quitted a way of life in which no man can rise suitably to his merit, who is not something of a courtier as well as a soldier. I have heard him often lament that in a profession where merit is placed in so conspicuous a view, impudence should get the better of modesty. When he had talked to this purpose; I never heard him make a sour expression, but frankly confess that he left the world because he was not fit for it. A strict honesty, and an even regular behavior, are in themselves obsta cles to him that must press through crowds, who endeavour at the same end with himself, the favor of a commander. He will, however, in his way of talk excuse generals for not disposing according to men’s desert, or inquiring into it; for, says he, that the great man who has a mind to help me, has as many, to break through to come at me, as I have to come at him: therefore he will conclude that the man who would make a figure, especially in a military way, must get over all false modesty, and assist his patron against the impor tunity of other pretenders, by a proper assurance in his own vindication. He says it is a civil cowardice to be backward in asserting what you ought to expect, as it is a military fear to be slow in attacking when it is your duty. With this eandour does the gentleman speak of himself and others. The same frankness runs through all his conversation. The military part of his life has furnished him with many adventures, in the relation of which he is very agreeable to the company; for he is never overbearing, though accustomed to command men in the utmost degree below him; nor ever too obsequious, from a habit of obeying men highly above him. Captain Sentry retired to the country because he was______.
2 Climatic conditions are delicately adjusted to the composition of the Earth’s atmos phere. If there were a change in the atmosphere—for example, in the relative proportions of atmosphere gases—the climate would probably change also. A slight increase in water vapor, for instance, would increase the hem-retaining capacity of the atmosphere and would lead to a rise in global temperatures. In contrast, a large increase in water vapor would increase the thickness and extent of the cloud layer, reducing the mount of solar en ergy reaching the Earth’surface. The level of carbon dioxide, CO2 in the atmosphere has important effect on climatic change. Most of the Earth’s incoming energy is short-wavelength radiation, which tends to pass through atmospheric CO2 easily. The Earth, however, reradiates much of the re ceived energy as a long-wavelength radiation, which CO2 absorbs and then remits toward the Earth. This phenomenon, known as the greenhouse effect, can result in an increase in the surface temperature of a planet. An extreme example of the effect is shown by the Ve- nus, a planet covered by heavy clouds composed mostly of CO2, whose surface tempera tures have been measured at 43℃. If the CO2 content of the atmosphere is reduced, the temperature falls. According to one respectable theory, if the atmospheric CO2 concentra tion were halved, the Earth would become completely covered with ice. Another equally respectable theory, however, states that a halving of the CO2 concentration would lead only to a reduction in global temperatures of 3℃. If, because of an increase in forest fires or volcanic activity, the CO2 content of the atmosphere increased, a warmer climate would be produced. Plant growth, which relies on both the warmth and the availability of CO2, would probably increase. As a consequence, plants would use more and more CO2，Eventually CO2 levels would diminish and the cli mate, in turn, would become cooler. With reduced temperatures many plants would die; CO2 would thereby be returned to the atmosphere and gradually the temperatures would rise again. Thus, if this process occurred, there might be a long-term oscillation in the amount of CO2 present in the atmosphere, with regular temperature increase and decrease of a set magnitude. Some climatologists argue that the burning of fossil fuels has raised the level of CO2 in the atmosphere and has caused a global temperature rise of at least 1℃. But a supposed global temperature rise of 1℃ may in reality be only several regional temperature increase, restricted to areas where there are many meteorological stations and caused simply by shifts in the pattern of atmospheric circulation. Other areas, for example the Southern Hemi sphere oceanic zone, may be experiencing an equivalent temperature decrease that is unrec ognized because of the shortage of meteorological recording stations. The passage supplies information for answering which of the following questions
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