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1、精选优质文档-倾情为你奉上2000英语专四CLOZEThe difference between a liquid and a gas is obvious ( 26 ) the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and ( 27 ) it to the level of a free surface. A gas forms no free surface but ( 28 )
2、to diffuse throughout the space available; it must ( 29 ) be kept in a closed container, as ( 30 )a planets atmosphere. The distinction was a prominent feature of early theories ( 31 )the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be “dissolve
3、d” in a vapor without losing its identity, and another theory held that the two phases are ( 32 ) different kinds of molecules (分子). The theories now prevailing ( 33 ) a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter that have no permanen
4、t structure, and they both flow easily. They are fluids.The ( 34 ) similarly of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.( 35 ) a closed container partially filled with a liquid is heated. The liquid expands or ( 36 ), becomes less dense; some
5、of it evaporates.( 37 ), the vapor above the liquid surface becomes denser as the evaporated molecules are added to it. The combination of temperature and pressure ( 38 ) the densities become equal is ( 39 ) the critical point. Above the critical point the liquid and the gas can no longer be ( 40 );
6、 there is a single, undifferentiated fluid phase of uniform density.26. A. in B. on C. under D. beyond27. A. fills B. be filled C. filling D. to fill28. A. intends B. tends C. inclines D. contends29. A. however B. nevertheless C. so D. therefore30 A. in the event of B. in the case of C. with a view
7、to D. with reference to31. A. having described B. described C. describing D. to have described32. A. made up of B. consisted of C. constituted of D. made from33. A. apply B. adapt C. take D. conduct34. A. elementary B. crucial C. rudimentary D. fundamental35. A. Suppose B. To suppose C. Being suppos
8、ed D. Supposed36. A. in a word B. in the meantime C. in other words D. in that case37. A. Similarly B. In contrast C. Furthermore D. Instead38. A. on that B. on which C. at that D. at which39. A. known B. defined C. called D. referred to40. A. classified B. recognized C. categorized D. distinguished
9、Part GRAMMAR AND VOCABULARY 41.Acute hearing helps most animals sense the approach of thunderstorms long before people_. A. do B. hear C. do them D. hearing it42. This is an illness that can result in total blindness _ left untreated.A. After B. If C. Since D.unless43. The central provinces have flo
10、ods in some years, and _.A. droughts in others B. droughts are othersC. while other droughts D. others in drought44. Do help yourself to some fruit,_ you?A. cant B. dont C. wouldnt D. wont45. There_ nothing more for discussion, the meeting came to an end half an hour earlier.A. to be B. to have been
11、 C. being D. be46. My mother cant get _ because she has rheumatism (风湿病).A. about B.on C. through D. in47. I was very much put _ by Marks rude behavior; it really annoyed me.A.over B.off C.up D.by48. You _ Jim anything about it. It was none of his business.A. neednt have told B. neednt tellC. mustnt
12、 have told D. mustnt tell49. All of us would have enjoyed the party much more if there_ quite such a crowd of people there.A. werent B. hasnt been C. hadnt been D. wouldnt be50. Firms that use computers have found that the number of staff _ is need for quality control can be substantially reduced A.
13、 whose B.as C. what D. that51. _ at in this way, the present economic situation doesnt seem so gloomy.A. Looking B. Looked C. Having looked D. To look52. Many people are _ to insect bites, and some even have to go to hospital.A. Insensitive B. Allergic C. Sensible D. infected53. When youre driving o
14、n a motorway, you must obey the signs telling you to get into the right _. A.way B.track C.road D.lane54. The motorist had to _to avoid knocking the old woman down in the middle of the road.A. Swerve B. Twist C. Depart D. swing55.In winter drivers have trouble stopping their cars from _ on icy roads
15、.A. Skating B. Skidding C. Sliding D. slipping56. This project would _ a huge increase in defense spending.A. Result B. Assure C. Entail D. accomplish57. The chances of a repetition of these unfortunate events are _ indeed.A. Distant B. Slim C. Unlikely D. narrow58. We should make a clear _ between
16、“competent” and “proficient” for the purposes of our discussion.A. Separation B. Division C. Distinction D. difference59. In the present economic _ we can make even greater progress than previously.A. Air B. Mood C. Area D. climate60. Rite of Passage is a good novel by any standards;_, it should ran
17、k high on any list of science fiction.A. Consistently B. Consequently C. Invariably D. fortunately61.The diversity of tropical plants in the region represents a seemingly_ source of raw materials, of which only a few have been utilized.A. Exploited B. Controversial C. Inexhaustible D. Remarkable62.
18、While he was in Beijing, he spent all his time _ some import ant museums and buildings.A. Visiting B. Traveling C. Watching D. touring63. You must let me have the annual report without _ by ten oclock tomorrow morning.A. Failure B. Hesitation C. Trouble D. Fail64. As the director cant come to the re
19、ception, Im representing the companyA. on his account B. on his behalf C. for his part D. in his interest65.Dreams are_ in themselves, but when combined with other data, they can tell us much about the dreamer.A. Uninformative B. Startling C. Harmless D. UncontrollablePart READING COMPREHENSION 30 M
20、IN.TEXT AClearly if we are to participate in the society in which we live we must communicate with other people. A great deal of communicating is performed on a person-to-person basis by the simple means of speech. If we travel in buses, buy things in shops, or eat in restaurants, we are likely to h
21、ave conversations where we give information or opinions, receive news or comment, and very likely have our views challenged by other members of society.Face-to-face contact is by no means the only form of communication and during the last two hundred years the art of mass communication has become on
22、e of the dominating factors of contemporary society. Two things, above others, have caused the enormous growth of the communication industry. Firstly,inventiveness has led to advances in printing, telecommunications, photography, radio and television.Secondly, speed has revolutionised the transmissi
23、on and reception of communications so that local news often takes a back seat to national news, which itself is often almost eclipsed by international news.No longer is the possession of information confined to a privileged minority. In the last century the wealthy man with his own library was indee
24、d fortunate, but today there are public libraries. Forty years ago people used to flock to the cinema, but now far more people sit at home and turn on the TV to watch a program that is being channeled into millions of homes.Communication is no longer merely concerned with the transmission of informa
25、tion. The modem communication industry influences the way people live in society and broadens their horizons by allowing access to information, education and entertainment. The printing, broadcasting and advertising industries are all involved with informing, educating and entertaining.Although a gr
26、eat deal of the material communicated by the mass media is very valuable to the individual and to the society of which he is a part, the vast modem network of communications is open to abuse. However, the mass media are with us for better, for worse, and there is no turning back.66.In the first para
27、graph the writer emphasizes the_ of face-to-face contact in social settings.A. Nature B. Limitation C. Usefulness D. creativity67.It is implied in the passage that_.A.local news used to be the only source of information.B. local news still takes a significant place.C. national news is becoming more
28、popular.D. international news is the fastest transmitted news.68.Which of the following statements is INCORRECT?A. To possess information used to be a privilege.B. Public libraries have replaced private libraries.C. Communication means more than transmission.D. Information influences ways of life an
29、d thinking.69.From the last paragraph we can infer that the writer is_.A. indifferent to the harmful influence of the mass mediaB. happy about the drastic changes in the mass mediaC. pessimistic about the future of the mass mediaD. concerned about the wrong use of the mass mediaTEXT BThe men and wom
30、en of Anglo-Saxon England normally bore one name only. Distinguishing epithets were rarely added. These might be patronymic, descriptive or occupational. They were, however, hardly surnames. Heritable names gradually became general in the three centuries following the Norman Conquest in 1066. It was
31、 not until the 13th and 14th centuries that surnames became fixed, although for many years after that, the degree of stability in family names varied considerably in different parts of the country.British surnames fall mainly into four broad categories: patronymic, occupational, descriptive and loca
32、l. A few names, it is true, will remain puzzling: foreign names, perhaps, crudely translated, adapted or abbreviated; or artificial names. In fact, over fifty percent of genuine British surnames derive from place names of different kinds, and so they belong to the last of our four main categories. E
33、ven such a name as Simpson may belong to this last group, and not to the first, had the family once had its home in the ancient village of that name. Otherwise, Simpson means “the son of Simon”, as might be expected. Hundreds of occupational surnames are at once familiar to us, or at least recogniza
34、ble after a little thought: Archer, Carter, Fisher, Mason, Thatcher, Taylor, to name but a few. Hundreds of others are more obscure in their meanings and testify to the amazing specialization in medieval arts, crafts and functions. Such are “Day”, (Old English for bread maker) and “Walker” (a fuller
35、 whose job it was to clean and thicken newly made cloth).All these vocational names carry with them a certain gravity and dignity, which descriptive names often lack. Some, it is true, like “Long”, “Short” or “Little”, are simple. They may be taken quite literally. Others require more thinking: thei
36、r meanings are slightly different from the modem ones. “Black” and “White “ implied dark and fair respectively. “Sharp” meant genuinely discerning, alert, acute rather than quick-witted or clever. Place-names have a lasting interest since there is hardly a town or village in all England that has not
37、 at some time given its name to a family. They may be picturesque, even poetical; or they may be pedestrian, even trivial. Among the commoner names which survive with relatively little change from old-English times are “Milton”(middle enclosure) and “Hilton”(enclosure on a hill).70. Surnames are sai
38、d to be _ in Anglo-Saxon England.A. Common B. Vocational C. Unusual D. descriptive71. We learn from the first paragraph _ for many years after the 13th and 14th centuries.A. family names became descriptive and occupationalB. people in some areas still had no surnamesC. some people kept changing thei
39、r surnamesD. all family names became fixed in England72. “Patronymic” in the second paragraph is closest in meaning to “formed from _.A. the name of ones father”B. the family occupation”C. ones family home”D. ones family history”73. Which of the following sentences is an opinion rather than a fact?A
40、. hundreds of occupational names are at once familiar to us.B. “Black” and “White” implied “dark” and “fair” respectively.C. Vocational names carry with them a certain gravity and dignity.D. Every place in England has given its name to a family.TEXT C Since the early 1930s, Swiss banks had prided th
41、emselves on their system of banking secrecy and numbered accounts. Over the years, they had successfully withstood every challenge to this system by their own government who, in turn, had been frequently urged by foreign governments to reveal information about the financial affairs to certain accoun
42、t holders. The result of this policy of secrecy was that a kind of mystique had grown up around Swiss banking. There was a widely-held belief that Switzerland was irresistible to wealthy foreigners, mainly because of its numbered accounts and bankers reluctance to ask awkward questions of depositors
43、. Contributing to the mystique was the view, carefully propagated by the banks themselves, that if this secrecy was ever given up, foreigners would fall over themselves in the rush to withdraw money, and the Swiss banking system would virtually collapse overnight.To many, therefore, it came like a b
44、olt out of the blue, when, in 1977, the Swiss banks announced they had signed a pact with the Swiss National Bank (the Central Bank). The aim of the agreement was to prevent to improper use of the countrys bank secrecy laws, and its effect was to curb severely the system of secrecy.The rules which t
45、he banks had agreed to observe made the opening of numbered accounts subject to much closer scrutiny than before. The banks would be required, if necessary, to identify the origin of foreign funds going into numbered and other accounts. The idea was to stop such accounts being used for dubious purposes. Also they agreed not to accept funds resulting from tax evasion or from crime.The pact represented essentially a tightening up of banking rules. Although the banks agreed to end relations with clients whose identities were unclear or who were performing improper acts, they were still not obl