【正文】 h as love, money, fame, moral, and the interrelationship between them, of course we can not omit the most important motif dream. I believe that anyone who read it can be moved by the sentimental affections, benefit a lot by the profound meanings. This novel likes a senior elder give us a good lesson and leave us a plenty of introspections. Tragedies usually happen in a tragic age, if The Great Gatsby is a tragedy, then the society of that current must be to blame. The connection between The Great Gatsby and the American Dream is that the society of 1920s was dangerous, the meaning of dream has lost its original essences, the American Dream was already far away from the initial concepts and destructive. For the majorities, dream was merely means success and money, all the traditional, upward, beautiful, pure connotations about dream had gone, only left the shallow, crazy infatuation about wealth. People gave little attention to the the importance of moral values and the development of humanity, only indulged in creature forts. From the ending of the major character Gatsby, we can learn that the tragedy of him mainly lied in the social background of the roaring twenties, people around him could not care his sincere love for Daisy except for the enjoyments, also the selfish, cold crowd including Daisy herself, under such circumstance how can Gatsby’s dream e true? Although people did not realized the gains and losses, actually the serious consequences had already e into play. Gatsby became a millionaire but still can not obtain his love, only got his dream withered and life ended. Tom was born with everything but can not own a happy family. All of this indicate: money can not buy love and happiness. Dream collapsed, both Gatsby’s and American’s. Thus we shall call for the authentic and pure dream, not only fight for the material improvements but also the spiritual progress。 we should clean up the mind confusions, set up the real goals to go forward. As the last of the novel read: “tomorrow we will run faster, stretch put our arms farther ”(182). Works Cited 10 Adams, James, Truslow. The Epic of America. London: Simon Publications, 2022. Bruccoli, Matthew J. New Essay On The Great Gatsby. Beijing: Beijing University press, 2022. Scribners. The Great Gatsby. New York: Scientific Research Publishing, 1925. Yao, Naiqiang. [姚乃強(qiáng) ]，《了不起的蓋茨比》 . 北京：人民文學(xué) 出版社 , 2022. 11 請刪除以下內(nèi)容， O(∩ _∩ )O 謝謝?。?！ conduction, transfer of heat or electricity through a substance, resulting from a difference in temperature between different parts of the substance, in the case of heat, or from a difference in electric potential, in the case of electricity. Since heat is energy associated with the motions of the particles making up the substance, it is transferred by such motions, shifting from regions of higher temperature, where the particles are more energetic, to regions of lower temperature. The rate of heat flow between two regions is proportional to the temperature difference between them and the heat conductivity of the substance. In solids, the molecules themselves are bound and contribute to conduction of heat mainly by vibrating against neighboring molecules。 a more important mechanism, however, is the migration of energetic free electrons through the solid. Metals, which have a high freeelectron density, are good conductors of heat, while nonmetals, such as wood or glass, have few free electrons and do not conduct as well. Especially poor conductors, such as asbestos, have been used as insulators to impede heat flow (see insulation). Liquids and gases have their molecules farther apart and are generally poor conductors of heat. Conduction of electricity consists of the flow of charges as a result of an electromotive force, or potential difference. The rate of flow, ., the electric current, is proportional to the potential difference and to the electrical conductivity of the substance, which in turn depends on the nature of the substance, its crosssectional area, and its temperature. In solids, electric current consists of a flow of electrons。 as in the case of heat conduction, metals are better conductors of electricity because of their greater freeelectron density, while nonmetals, such as rubber, are poor conductors and may be used as electrical insulators, or dielectrics. Increasing the crosssectional area of a given conductor will increase the current because more electrons will be available for conduction. Increasing the temperature will inhibit conduction in a metal because the increased thermal motions of the electrons will tend to interfere with their regular flow in an electric current。 in a nonmetal, however, an increase in temperature improves conduction because it frees more electrons. In liquids and gases, current consists not only in the flow of electrons but also in that of ions. A highly ionized liquid solution, ., saltwater, is a good conductor. Gases at high temperatures tend to bee ionized and thus bee good conductors (see plasma), although at ordinary temperatures they tend to be poor conductors. See electrochemistry。 electrolysis。 superconductivity. Almost everyone has experienced the Doppler effect, though perhaps without knowing what causes it. For example, if one is standing on a street corner and an ambulance approaches with its siren blaring, the sound of the siren steadily gains in pitch as it es closer. Then, as it passes, the pitch suddenly lowers perceptibly. This is an example of the Doppler effect: the change in the observed frequency of a wave when the source of the wave is moving with respect to the observer. The Doppler effect, which occurs both in sound and electromagic waves— including light waves— has a number of applications. Astronomers use it, for ins