[toefl试题和答案]TOEFL试题（1）2

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versatility of glass
(C) To explain glassmaking technology
(D) To explain the purpose of each component of glass

11. The word "durable"" in hue 3 is closest in meaning to
(A) lasting
(B) delicate
(C) heavy
(D) Plain

12. What does the author imply about the raw materials used to make glass?
(A) They were the same for centuries.
(B) They arc liquid
(C) They are transparent
(D) They are very heavy.

13. According to the passage, how is glass that has cooled and become rigid different from most other rigid substances?
(A) It has an interlocking crystal network.
(B) It has an unusually low melting temperature.
(C) It has varying physical properties.
(D) It has a random molecular structure.

14. The word "customarily" in line 13 is closest in meaning to
(A) naturally
(B) necessarily
(C) usually
(D) certainly

15. The words "exposed to" in line 19 are closest in meaning to
(A) hardened by
(B) chilled with
(C) subjected to
(D) deprived of

16. What must be done to release the internal stresses that build up in glass products during manufacture?
(A) the glass must be reheated and evenly cooled.
(B) the glass must be cooled quickly.
(C) The glass must be kept moist until cooled.
(D) The glass must be shaped to its desired form immediately

17. The word "induced" in line 21 is closest in meaning to
(A) joined
(B) missed
(C) caused
(D) lost

18. The word "it" in line 22 refers to
(A) feature
(B) glass
(C) manner
(D) viscosity

19. According to the passage. why can glass be more easily shaped into specific forms than can metals
(A)It resists breaking when heated
(B)It has better optical properties.
(C)It retains heat while its viscosity changes.
(D) It gradually becomes softer as its temperature rises.

Question 20-30

A great deal can be learned from the actual traces of ancient human locomotion: the footprints of early hominids. The best-known specimens are the remarkable tracks discovered at Lactoli, Tanzania, by Mary Leaky. These were left by small hominids around 3.6 to 3.75 million years ago, according to potassium – argon dates of the volcanic rocks above and below this level. These hominids walked across a stretch of moist volcanic ash, which was subsequently turned to mud by rain, and which then set like concrete.

Examination of he shape of the prints revealed to Mary Leakey that the feet had a raised arch, a rounded heel, a pronounced ball, and a big toe that pointed forward. These features, together with the weight-bearing pressure patterns, resembled the prints of upright-walking modern humans. The pressures exerted along the foot, together with the length of stride, which averaged 87 centimeters, indicated that the hominids had been walking slowly. In short, all the detectable morphological features implied that the feet that left the footprints were very little different from those of contemporary humans.

A detailed study has been made of the prints using photogrammetry, a technique for obtaining measurements through photographs, which created a drawing showing all the curves and contours of the prints. The result emphasized that there were at least seven points of similarity with modern bipedal prints, such as the depth of the heel impression, and the deep imprint of the big toe. M Day and E. Wickens also took stereophotographs of the Lactoli prints and compared them with modern prints make by men and women in similar soil conditions. Once again, the results furnished possible evidence of bipedalism. Footprints thus provide us not merely with rare impressions of the soft tissue of early hominids, but also with evidence of upright waling that in many ways is clearer than can be obtained from the analysis of bones.

The study of fossil footprints is not restricted to examples from such remote periods. Hundreds of prints are known, for example, in French caves dating from the end of the last ices age, approximately 10,000 years ago. Research by Leon Pales, using detailed silicon resin molds of footprints mostly made by bare feet, has provided information about this period.

20. What does the passage mainly discuss?
(A)The analysis of footprint fossils
(B)Accurate dating of hominid remains
(C) the career of Mary Leakey
(D)Behavioral patterns of early humans

21. The word "remarkable" in line 2 is closest in meaning to
(A) extraordinary
(B) enormous
(C) various
(D) orderly

22.The age of the Laetoli footprints was estimated by
(A) testing the fossilized bones of the hominids
(B) studying the shape of the footprints
(C) analyzing nearly rock layers
(D) comparison with footprints from other locations

23.It can be inferred that the footprints in volcanic ash at Laetoli were well preserved because
(A) they were buried by a second volcanic eruption
(B) the ash contained potassium anti argon
(C) the ash was still warm from the volcanic cruptions
(D) suitable conditions caused the ash 10 harden

24. Which or the following is NOT mentioned as a characteristic of the feet in Mary Leakey"s fossil find?
(A)The shape or the heel
(B)The number of toes
(C)A raised arch
(D) A pronounced ball

25. The word "exerted" in line 11 is closest in meaning to
(A) influenced
(B) applied
(C) returned
(D) lessened

26. The figure of 87 centimeters mentioned in line 1 2 refers to the size of the
(A) objects carried by the hominids
(B) steps taken by the hominids
(C) hominids bodies
(D) hominids feet

27. Why does the author mention the "heel impression" in line 19?
(A) To emphasize the size of the hominids foot
(B) To speculate on a possible injury the hominid had suffered
(C) To give an example of similarity to modern human footprints
(D) To indicate theweight of early hominids

28.The word "restricted" in line 26 is closest in meaning to
(A) limited
(B) improved
(C) continued
(D) succeeded

29.What can be inferred about the footprints found in French caves mentioned in the last paragraph?
(A)They show more detail than the Laetoli prints.
(B)They are of more recent origin than the Laetoli prints.
(C)They are not as informative as the Laetoli prints.
(D)They are more difficult to study than the Laetoli prints

30.Which of the following terms is defined in the passage?
(A) "hominids" (line 3)
(B) "arch" (line 9)
(C) "photogrammetry" (line 16)
(D) "silicon resin molds"(line 29)

Questions 31-40

The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive nutrients directly from them. The parasitic way of life is widespread. A multitude of microorganisms( including viruses and bacteria) and an army of invertebrates – or creatures lacking a spinal column (including crustaceans, insects, and many different types of worms ) –make their livings directly at the expense of other creatures. In the face of this onslaught, living things have evolved a variety of defense mechanisms for protecting their bodies from invasion by other organisms.

Certain fungi and even some kinds of bacteria secrete substances known as antibiotics into their external environment. These substances are capable of killing or inhibiting the growth of various kinds of bacteria that also occupy the area, thereby eliminating or reducing the competition for nutrients. The same principle is used in defense against invaders in other groups of organisms. For example, when attacked by disease-causing fungi or bacteria, many kinds of plants produce chemicals that help to ward off the invaders.

Members of the animal kingdom have developed a variety of defense mechanisms for dealing with parasites. Although these mechanisms vary considerably, all major

groups of animals are capable of detecting and reacting to the presence of "foreign" cells. In fact, throughout the animal kingdom, from sponges to certain types of worms, shellfish, and all vertebrates (creatures possessing a spinal column), there is evidence that transplants of cells or fragments of tissues into an animal are accepted only if they come from genetically compatible or closely related individuals.

The ability to distinguish between "self" and "nonself", while present in all animals, is most efficient among vertebrates, which have developed an immune system as their defense mechanism. The immune system recognizes and takes action against foreign invaders and transplanted tissues that are treated as foreign cells.

31. What does the passage mainly discuss?
(A) how parasites reproduce
(B) how organisms react to invaders
(C) how antibiotics work to cure disease
(D) how the immune systems of vertebrates developed

32. The word "intricate" iii line 1 is closest in meaning to
(A) difficult
(B) widespread
(C) critical
(D) complex

33. The expression "an army" in line 6 is closest in meaning to
(A) an illness
(B) an attack
(C) a large number
(D) a distinct type

34. The expression "an army in line 6 is closest in meaning to
(A) an illness
(B) an attack
(C) a large number
(D) a distinct type

35. According to the passage, some organisms produce antibiotics in order to
(A) prevent disease in humans
(B) aid digestion
(C) fight off other organisms
(D) create new types of nutrients

35.The word "vary" in line 19 is closest in meaning to
(A) differ
(B) endure
(C) balance
(D) contribute

36. The word "they" in line 23 refers to
(A) sponges, worms and shellfish
(B) vertebrates
(C) individuals
(D) transplants

37. According to the passage, a transplant of tissue between genetically incompatible organisms will result in the transplanted tissue
(A) becoming a parasite
(B) being treated as an invader
(C) altering its genetic makeup
(D) developing a new immune system

38. According to the passage, the ability to distinguish between "self" and "nonself" enables vertebrates to
(A) accept transplanted cells
(B) detect and react to invasion
(C) weaken their immune system
(D) get rid of antibiotics

39. All of the following ate defined in the passage EXCEPT
(A) parasites(line 4)
(B) invertebrates(line7)
(C) nutrients (line14)
(D) vertebrates(line 22)

40. The paragraph following the passage most probably discusses
(A) how the immune system in vertebrates fights off foreign cells
(B) different types of bacteria and lung
(C) how vertebrates and invertebrates differ
(D) examples of different groups of organisms

Question 41-50

The development of jazz can be seen as part of the larger continuum of American popular music, especially dance music. In the twenties, jazz became the hottest new thing in dance music, much as ragtime had at the turn of the century, and as would rhythm and blues in the fifties, rock in the fifties, and disco in the seventies.

But two characteristics distinguish jazz from other dance music. The first is improvisation, the changing of a musical phrase according to the player"s inspiration. Like all artists, jazz musicians strive for an individual style, and the improvise or paraphrased is a jazz musician"s main opportunity to display his or her individuality. In early jazz, musicians often improvised melodies collectively, thus creating a kind of polyphony. There was little soloing as such, although some New Orleans players, particularly cornet player Buddy Bolden, achieved local fame for their ability to improvise a solo. Later the idea of the chorus-long or multichorus solo took hold. Louis Armstrong"s instrumental brilliance, demonstrated through extended solos, was a major influence in this development.

Even in the early twenties, however, some jazz bands had featured soloists. Similarly, show orchestras and carnival bands often included one or two such "get-off" musicians. Unimproved, completely structured jazz does exist, but the ability of the best jazz musicians to create music of great cohesion and beauty during performance has been a hallmark of the music and its major source of inspiration and change.

The second distinguishing characteristic of jazz is a rhythmic drive that was initially called "hot" and later "swing". In playing hot , a musician consciously departs from strict meter to create a relaxed sense of phrasing that also emphasizes the underlying rhythms.("Rough" tone and use of moderate vibrato also contributed to a hot sound .) Not all jazz is hot, however, many early bands played unadorned published arrangements of popular songs. Still, the proclivity to play hot distinguished the jazz musician from other instrumentalists.

41. The passage answers which of the following questions?
(A) which early jazz musicians most Influenced rhythm and blues music?
(B) What are the differences between jazz and other forms of music?
(C) Why Is dancing closely related to popular music in the United States?
(D) What Instruments comprised a typical jazz band of the 1920"s?

42. Which of the following preceded jazz as a popular music for dancing?
(A) Disco
(B) Rock
(C) Rhythm and blues
(D)Ragtime

43. According to the passage, jazz musicians are able to demonstrate their individual artistry mainly by?
(A) creating musical variations while performing
(B) preparing musical arrangements
(C) reading music with great skill
(D) being able to play all types of popular music

44. Which of the following was the function of "get-off" musicians (line 16)?
(A) Assist the other band members in packing up after a performance
(B) Teach dance routines created for new music
(C) Lead the band
(D) Provide solo performances in a band or orchestra

45. The word "cohesion" in line 18 is closest in meaning to
(A) sorrow
(B) fame
(C) unity
(D) vibration

46. The word "initially" in line 20 is closest in meaning to
(A) at first
(B) shortly
(C) alphabetically
(D) in fact

47. The word "consciously" in line 21 is closest in meaning to
(A) carelessly
(B) easily
(C) periodically
(D) purposely

48. The word "unadorned" in line 24 is closest in meaning to
(A) lovely
(B) plain
(C) disorganized
(D) inexpensive

49. Which of the following terms is defined in the passage?
(A) "improvisation" (line 6)
(B) "polyphony" (line 10)
(C) "cornet player"(line 11)
(D) "multichorus"(line 12)

50. The topic of the passage is developed primarily by means of
(A) dividing the discussion into two major areas
(B) presenting contrasting points of view
(C) providing biographies of famous musician
(D) describing historical events in sequence

 

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