| 四六级考试六级每日一练（2018/9/18） |
| 第1、2、3、4、5题：Television was not invented by any one person. Nor did it spring into being overnight. It evolved gradually, over a long period, from the ideas of many people -- each one building on the work of their predecessors. The process began in 1873, when it was accidentally discovered that the electrical resistance of the element selenium varied in proportion to the intensity of the light shining on it. Scientists quickly recognized that this provided a way of transforming light variations into electrical signals. Almost immediately a number of schemes were proposed for sending pictures by wire(it was, of course, before radio). One of the earliest of these schemes was patterned on the human eye. Suggested by G. R. Carey in 1875, it envisioned a mosaic of selenium calls on which the picture to be transmitted would be focused by a lens system. At the receiving end there would be a similarly arranged mosaic made up of electric lights. Each selenium cell would be connected by an individual wire to the similarly placed light in the receiving mosaic. Light falling on the selenium cell would reproduce the original picture, had the necessary amplifiers and the right kind of lights been availablr, this system would have workrd. But it also would have required an imoractical number of connecting wires. Carey recognized this and in a second proposed to “scan” the cells-transmitting the signal from each cell to its associated light, in turn, over a single wire. If this were done fast enough, the retentive power of the eye would cause the resultant image to be seen as a complete picture. 41. Which of the following is the best title for the passage? A. Television in the Electronic Era B. First Steps in the Invention of Television C. The Art of Television D. Harmful Effects of Television Viewing 42. In line 1, the word “being” could best be replaced by _____. A. place B. creature C. subsistence D. existence 43. An important discovery in earlyteleviosion was the electrical resistance of _____. A. mosaics B. the human eye C. lenses D. the element selenium 44. In 1875, Carey suggested that the human eye envisioned a mosaic of selenium cells on which the picture to be transmitted would be focused by ______. A. wire B. electric lights C. a lens system D. amplifiers 45. Following are the reasons why the first scheme for television was abandoned except _____. A. he lacks an effective assistant B. the necessary amplifers were unavailable C. the proper lights were unavailable D. the number of connecting wires is impractical |
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| 第6题：How son will be （） robots become so intelligent that they will be able to do jobs which at the moment only human beings can do? A. before B. that C. when D. since |
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| 第7、8、9、10、11题：Because Ireland is an island geographically near the mainland of the United Kingdom, English rulers have fought since the Middle-English Ages to retain political control over it. Attracted by the lush farmland, English and Scottish landowners settled there, and in time of famine or political unrest, the local workers suffered, while their landlords were cushioned by their wealth. The history of modern Ireland is, in fact, largely a story of antagonism and resentment between the Irish and their English and Scottish rulers. Since the 1920's, Ireland has been divided into two parts: Northern Ireland (Ulster) and the Republic of Ireland (Eire). The north is still part of the United Kingdom and is predominantly Protestant; the south is an independent republic and is mainly Catholic. The majority in Ulster accept this political compromise, but the active and mainly Catholic minority are fighting for union with the independent republic of Southern Ireland. The IRA, the Irish Republican Army, have mounted bombing campaigns in military and civil targets in Ulster and England. They have sent letter-bombs to public figures, they have slot fellow Irishmen who support the British or belong to opposing, and now equally militant Protestant groups. As a result of this, the British have stationed an army in Belfast, the IRA have been outlawed, and several of them have spent many years in prison or have died in support of their cause. Whether this level of violence and repression is justifiable, and whether the violence that could result from political change would be worthwhile are the controversial issues that divide everybody involved. 36. It suggested that the central problem is relationship between _______. A. Britain and Ireland B. Ulster and Eire C. Catholics and Protestants D. the Irish Republican Army and Ulster. 37. This outline suggests that the central problem is ________. A. many centuries old B. about three centuries old C. about 80 years old D. a few years old 38. The IRA is ________. A. part of the Ulster police force B. part of American army C. a group of militant priests D. a terrorist organization 39. Bomb attacks occur _______. A. only in England B. when public figures talk about Ireland C. only in Northern Ireland D. in England and Northern Ireland 40. The writer feels that the controversy is about ________. A. freedom B. political change C. the use of violence D. injustice |
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| 第12题： Either my wife or I____able to persuade my daughter to change her mind. A.are B.were C.is D.am |
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| 第13题：When two people feel the same way about each other, their feeling are （）. A. liable B. visible C. typical D. mutual |
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| 第14题：Unlike science,progress in technology must be measured in terms of the human factor.Technology must be our slave and（）. A.not the reverse B.not the version C.not the same D.not the prejudice |
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| 第15题：The football match was televised____from the Worker's Stadium. A.alive B.life C.live D.lively |
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| 第16题：Hisplansarevery（）;hewantstomasterFrench,German,andSpanishbeforeheiseighteen. A.brilliant B.applicable C.ambitious D.adjustable |
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| 第17题：Generally speaking,men are____stronger than women. A.boldly B.bodily C.completely D.physically |
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| 第18题：Thechairmanwasevidently（）byJim'swordandglaredathimforafewminutes. A.putdown B.putacross C.putaway D.putout |
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