100个句子记忆四级词汇

俞敏洪老师从100套真题中提炼而出的100个经典句子。

1. Typical of the grassland dwellers['dwel?(r)]（居民，复数）of the continent ['k?ntin?nt]（大陆，洲）is the American antelope ['?ntil?up]（羚羊）, or pronghorn['pr??h?:n, 'pr?:?-]（叉角羚）。

2. Of the millions who saw Haley’s comet['k?mit]（彗星）in 1986, how many people will live long enough to see it return in the twenty-first century。

3. Anthropologists[,?nθr?'p?l?d?ist]（人类学家）have discovered that fear, happiness, sadness, and surprise are universally[,ju:ni'v?:s?li] （普遍的）reflected [ri'flekt]（反应）in （refelct in词组含义：反应在…上）facial ['fei??l] expressions。

4. Because of its irritating ['iriteiti?](adj,是irritate的ing形式，刺激性的)effect[i'fekt]（n,影响，作用，效果vt，产生，达到目的）on humans, the use of phenol['fi:n?l, fi'n-] （石碳酸，苯酚，）as a general antiseptic[,?nti'septik] （n,防腐剂，adj,防腐的，干净整洁的）has been largely discontinued（停止使用，不连续的）。

5. In group to remain in （保持处于某种状态）existence, a profit-making['pr?fit,meiki?] （盈利的，有利可图的）organization must, in the long run, produce something consumers consider useful or desirable[di'zai?r?bl]（desire的形容词，令人想要的，希望的）。

6. The greater the population there is in a locality[l?u'k?l?ti]（n,所在位置，地点）, the greater the need there is for water, transportation, and disposal of refuse（n,垃圾，vt,拒绝）。

7. It is more difficult to write simply, directly, and effectively than to employ flowery but vague[veiɡ]（模糊的，暧昧的）expressions that only obscure [?b'skju?, ?b-] （v.遮掩，adj 模糊的昏暗的）one’s meaning。

8. With modern['m?d?n]（n,现代人，有思想的人adj,现代的）offices becoming more mechanized（机械化的，自动的）, designers are attempting[?'tempt] （企图，试图）to personalize （把…人性化，把…拟人化）them with warmer, less severe[si'vi?]（严重的，剧烈的）interiors。

[in'ti?ri?]（interior的复数形式，内部的、国内的）

9. The difference between libel['laib?l]（诽谤，进行文字中伤）and slander['slɑ:nd?] （造谣中伤，这里理解成流言）is that libel is printed while slander is spoken。

10. The knee[ni:]（膝盖）is the joints where the thigh bone（大腿骨）meets the large bone of the lower leg。

11. Acids['?sid]（酸，acid，也有形容词意思：算的）are chemical ['kemik?l]（化学药品，化学的）compounds ['k?mpaund] （混合物，复合字，混合的）that, in water solution, have a sharp [?ɑ:p]（刺耳的，锋利的）taste, a corrosive [k?'r?usiv]（腐蚀性的）action on metals, and the ability to turn certain blue vegetable（蔬菜，植物，植物人）dyes（染料）red。

12. Billie Holiday’s reputation[,repju(:)'tei??n]（名声，名誉）as a great jazz-blues singer rests on（rest,休息，搁rest on 在于）her ability to give emotional depth to her songs。

13. Essentially, [i'sen??l]（essential的副词形式，要素、要点、必要的、本质的）a theory is an abstract, symbolic[sim'b?lik]（代号，象征的，符号的）representation of what is conceived [ri(:)'?liti]（构思，以为，怀孕）to be reality。

14. Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises。

15. Thanks to modern irrigation['irigeit]（irrigate的名词形式，灌溉）, crops now grow abundantly[?'b?nd?ntli]（丰富的，充裕的）in areas where once nothing but cacti（仙人掌）and sagebrush ['seid?br??]（一类植物）could live。

16. The development of mechanical[mi'k?nik?l] （机械的，也可以指人呆板的）timepieces（时钟，计时器，钟表产品）spurred[sp?:d] （鞭策，教唆）the search for more accurate sundials ['s?ndai?l]（日晷，日规）with which to regulate（调节，规定，控制，校准）them。

17. Anthropology（人类学）is a science in that anthropologists use a rigorous ['rig?r?s] （严格的，严酷的）set of methods and techniques to document observations[,?bz?:'vei??n] （观察，观察结果）that can be checked by others。

18. Fungi['f?nd?ai, 'f??gai] （菌类，蘑菇）are important in the process of decay[di'kei]（腐败）, which returns ingredients[in'gri:di?nt] （材料，成分）to the soil, enhance [in'hɑ:ns]（提高，加强，增加）soil fertility[f?:'tiliti]（肥沃，生产力，词组表示的土壤肥力）, and decomposes

（分解，腐烂）animal debris['deibri:]（碎片，残骸）。

19. When it is struck, a tuning fork[f?:k] （叉，词组意思，表示音叉）produces an almost pure [pju?] （纯的，纯粹的，纯洁的，清白的，纯理论的）tone[t?un]（语气，音调，音色）, retaining[ri'tein] （保持，保留）its pitch [pit?] （沥青；音高；程度；树脂；倾斜；投掷）over a long period of time。

20. Although pecans[pi'k?n] （核桃，美洲山核桃树）are most plentiful in the southeastern part of the United States, they are found as far north as Ohio[?u'hai?u] （俄核俄洲）and Illinois （伊利诺斯州，美国州名）。

21. Eliminating[i'limineit] （消除，排除）problems by transferring[tr?ns'f?:] （迁移，移动，调换是transfer的ing形式）the blame to others is often called scape-goating（scapegoat,替罪羔羊，scape-goating,寻找替罪羔羊的含义）。

22. The chief foods eaten in any country depend largely on what grows best in its climate and soil。

23. Over a very large number of trials['trai?l]（adj,尝试性的n,尝试，试验）, the probability of an event’s occurring is equal to the probability that it will not occur。

24. Most substance['s?bst?ns] (物质、实质、主旨) contract(n,合同，婚约vt,收缩，感染) when they freeze[fri:z]（使冻住，使冻结）so that the density['densiti]（密度）of a substance’

s solid is higher than the density of its liquid['likwid]（液体，流体，液体的，流体的）。

25. The mechanism['mek?niz?m] （机制，机理，原理，机械装置，技巧）by which brain cells store memories is not clearly understood。

26. By the middle of the twentieth century, painters and sculptors[sk?lpt?] （雕塑家）in the United States had begun to exert[ig'z?:t]（发挥，运用，施以影响）a great worldwide influence over art。

27. In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center。

28. Elizabeth Blackwell, the first woman medical doctor in the United States, founded the New Y ork Infirmary[in'f?:m?ri]（医务室，医院，养老院）, an institution[,insti'tju:??n] （制度，建立，公共机构，习俗）that has always had a completely female medical staff[stɑ:f]（全体员工，配备员工）。

29. Alexander Graham Bellonce told his family that he would rather be remembered as a teacher of the deaf than as the inventor of the telephone。

30. Because its leaves remain green long after being picked, rosemary ['r?uzm?ri, -mε?ri] （迷迭香）became associated [?'s?u?ieit] （associate,同伴，同伙，联合联系。Associate…with:与…联系起来）with the idea of remembrance[ri'membr?ns]（回忆，回想，纪念品，记忆力）。

31. Although apparently[?'p?r?ntli]（显然的，似乎，表面上的）rigid['rid?id]（严格的，僵硬的，死板的）, bones exhibit[ig'zibit] （展现，呈现，展览品） a degree of elasticity [,el?s'tis?ti]（弹性，弹力，灵活力）that enables the skeleton ['skelit?n]（骨架，骨骼，纲要）to withstand[wie'st?nd, wiθ-] （抵挡，反抗）considerable （相当大的，值得考虑的）impact （冲击，冲突，影响）。

32. That xenon['zen?n, 'zi:-] could not FORM chemical compounds was once believed by scientists。

33. Research into the dynamics[dai'n?miks] （动力学，力学）of storms（风暴，暴风雨）

is directed toward improving the ability to predict （预报，预言，预知）these events and thus to minimize （最小化，使减到最少）damage and avoid loss of life.

34. The elimination of inflation[in'flei??n]（膨胀，通货膨胀，夸张，自命不凡）would ensure that the amount of money used in repaying（偿还，回报，报复） a loan [l?un]（贷款，借款）would have the same value as the amount of money borrowed

.

35. Futurism, an early twentieth-century movement in art, rejected all traditions and attempted[?'tempt]（尝试，企图，试图）to glorify ['ɡl?:rifai]（赞美，美化）contemporary [k?n'temp?r?ri]（同时代的，同时期的东西，当代的，同时代的）life by emphasizing the machine and motion。

36. One of the wildest and most inaccessible[,in?k'ses?bl]（难达到的，难接近的，难见到的）parts of the United States is the Everglades['ev?ɡleidz] （沼泽地）where wildlife is abundant and largely protected。

37. Lucretiar[lju:'kri:??](罗马一妇女的名字) Mott’s influence was so significant（象征，有意义的事物；值得注意的，重大的）that she has been credited（credit的过去式或过去分词：信用，信誉，贷款，vt:归功于，赞颂，信任）by some authorities（[?:'θ?ritiz]，当局，官方）as the originator[?'rid??neit?, -n?-]（发起人，起源，起因）of feminism in the United States。

38. The activities of the international marketing researcher are frequently much broader than those of the domestic[d?u'mestik]（国内的，家庭的，国货，佣人）marketer。

39. The continental divide refers to an imaginary line in the North American Rockies['r?kiz]

（北美山脉）that divides the waters flowing into the Atlantic Ocean from those flowing into the Pacific。

40. Studies of the gravity['gr?viti] （地心引力，重力）field（引力场，地心重力场）of

the Earth indicate that its crust[kr?st] （外壳，面包皮，坚硬外皮）and mantle['m?ntl]（地幔，斗篷，覆盖物）yield when unusual weight is placed on them。

41. The annual（每年的，年度的）worth of Utah’s manufacturing is greater than that of its mining['maini?]（采矿，矿业）and farming combined（联合，结合）。

42. The wallflower is so called because its weak stems[stem]（茎，杆；堵住，阻止）often

grow on walls and along stony['st?uni]（石头的）cliffs[klif] （悬崖，峭壁）for support。

43. It is the interaction（交互作用，相互作用）between people, rather than the events that occur in their lives, that is the main focus of social psychology[sai'k?l?d?i]（心理学）。

44. No social crusade[kru:'seid] （改革运动，从事改革运动）aroused Elizabeth Williams’enthusiasm more than the expansion of educational facilities[f?'siliti] （设施，设备）for immigrants['imigr?nt] （移民）to the United States。

45. Quails[kweil]（鹌鹑；胆怯，感到恐惧）typically have short rounded wings that enable them to spring into full flight instantly['inst?ntli] （立即的，即刻的）when disturbed in their hiding['haidi?] places。

46. According to anthropologists[,?nθr?'p?l?d?ist]（人类学家）, the earliest ancestors['?ns?st?] （祖先，鼻祖）of humans that stood up right resembled [ri'zembl]（类似，像）chimpanzees['t?imp?n'zi:] （黑猩猩）facially['fei?i?li]（adv,从脸部）, with sloping['sl?upi?] （倾斜的，益处）foreheads and protruding[pr?u'tru:d]（突出，使伸出）brows。

47. Not until 1866 was the fully successful transatlantic[,tr?nz?t'l?ntik, ,tr?ns-, ,trɑ:n-]（横渡大西洋的）cable finally laid。

48. In his writing, JohnCrowe Ransom describes what he considers the spiritual['spiritju?l] barrenness['b?r?nnis]（不育症，荒芜）of society brought about by science and technology。

49. Children with parents whose guidance['ɡaid?ns]（指导，引导）is firm, consistent （始终如一的，一致的坚持的）, and rational['r???n?l] （合理的，理性的，有理数）are inclined[in'klaind] （倾向于，有利于）to possess[p?'zes]（拥有，持有）high levels of self-confidence。

50. The ancient Hopewell（霍普威尔，美国地名）people of North America probably

cultivated['k?ltiveitid] （耕种的，有教养的；发展，耕种）corn and other crops（农作物）, but hunting and gathering ['g?e?] （聚集，集合）were still of critical ['kritik?l] （鉴定的，批评的，决定性的，批评的，评论的）importance in their economy。

51. Using many symbols['simb?ls]（符号，象征，符号表）makes it possible to put a large amount of information on a single map。

52. Anarchism['?n?kiz?m]（无政府主意）is a term describing a cluster['kl?st?]（一组，一串）of doctrines['d?ktrin] （主意，学说，教义，信条）and attitudes whose principal['prins?p?l] （校长，委托人，当事人，资本，主犯；首要的，重要的）uniting[,ju'naiti?]

（联合，使联合，使结合）feature（整个词组：主要共同点）is the belief that government is both harmful and unnecessary。

53. Probably no man had more effect on the daily lives of most people in the Untied States than did Henry Ford a pioneer[,pai?'ni?] （先驱，开拓者）in automobile production。

54. The use of well-chosen（精选的，适当的）nonsense['n?ns?ns]（胡说，废话，荒谬的，无意义的）words makes possible the testing of many basic hypotheses[hai'p?θisi:z] （假定，臆测）in the field of language learning。

55. The history of painting is a fascinating['f?sineiti?] （迷人的哦）chain[t?ein] （链，枷锁，束缚）of events that probably began with the very first pictures ever made。

56. Perfectly matched[m?t?] （比赛，使…匹配）pearls[p?:lz]（珍珠的复数形式）, strung [str??]（string的过去时，过去分词）into a necklace['neklis]（项链）, bring a far higher price than the same pearls sold individually[,indi'vidju?li, -d?u-](个别的，单独的)。

57. During the eighteenth century, Little Turtle ['t?:tl]（海龟）was chief of the Miami[mai'?mi]（迈阿密）tribe[traib] （部落，宗族）whose territory['terit?ri] （领土，领域，范围，地域，版图）became what is now Indiana[,indi'?n?]（印第安）and Ohio。

58. Among almost seven hundred species of bamboo（竹子）, some are fully grown at less than

a foot high, while others can grow three feet in twenty-four hours。

59. Before staring on a sea voyage['v?iid?]（航海）, prudent['pru:d?nt] （谨慎的，精明

的，节俭的）navigators（航海家）learn the sea charts（图表，绘制的海图，制定计划）, study the sailing directions, and memorize lighthouse（灯塔）locations to prepare themselves for any

conditions they might encounter[in'kaunt?]（遭遇，邂逅，遇见）。

60. Of all the economically important plants, palms[pɑ:m]（棕榈树）have been the least studied。

61. Buyers and sellers should be aware[?'we?]（知道的，有意识的）of new developments in technology can and does affect（V，影响，作用，感动effect有名词和动词的含义）marketing activities。

62. The application[,?pli'kei??n]（应用，申请，应用程序）of electronic controls made possible by the microprocessor[,maikr?u'pr?uses?, -'pr?-]（未处理器）and computer storage ['st?rid?]（存储，仓库）have multiplied['m?ltiplai] （乘，使增加；多样的，复合的）the uses of the modern typewriter。

63. The human skeleton['skelit?n] （骨架，骨骼）consists of more than two hundred bones bound together by tough[t?f] （艰苦的，困难的，坚强的，强壮的；恶棍；坚持，坚忍）and relatively['rel?tiv]（相对的，比较的relative的副词）inelastic[,ini'l?stik]（无弹性的，无适应性的）connective[k?'n?ktiv]（连接物，连接词）tissues['tisju:] （动植物的组织，薄的纱织品）（connective tissues:结缔组织）called ligaments['lig?m?nt]（纽带，韧带）。

64. The pigmentation[,piɡm?n'tei??n] （色泽，染色，天然颜色）of a pearl is influenced by the type of oyster['?ist?]（牡蛎，蛤类的一种，是一种动物）in which it develops and by the depth, temperature, and the salt [s?:lt] （盐，含盐的，辛辣的）content['k?ntent]（内容，目录，满足，容量，度）of the water in which the oyster lives。

65. Although mockingbirds['m?ki?b?:d] （模仿鸟）superbly[sju:'p?:bli] （雄壮的，壮丽的，庄严的，严肃的）mimic ['mimik] （模仿者，仿制者；模仿的，假装的）the songs and

calls of many birds, they can quickly identified as mockingbirds by certain aural['?:r?l]（听觉的，耳的，气味的，先兆的）clues[klu:]（线索，提示）。

66. Not only can walking fish（会走的鱼）live out of water, but they can also travel short distances over land。

67. Scientists do not know why dinosaurs became extinct[iks'ti?kt]（灭绝的，熄灭的；消灭）, but some theories postulate['p?stjuleit, -t??-] （假定，要求，视为理所当然；）that changer sin geography, climate, and sea levels were responsible[ris'p?ns?bl]（有责任的，责任重大的）。

68. The science of horticulture['h?:tik?lt??]（园艺学）, in which the primary concerns[k?n's?:n] （关心，关系，关切的事；有关，影响，使关心）are maximum['m?ksim?m]（n，极大，最大限度；极大的，最大限度的）yield [ji:ld] （产量，收益，屈服，投降）and superior[sju:'piri?, sju:p?-] （上级的，优秀的，出众的，高傲的；n,上级，长官，优胜者）quality, utilizes['ju:tilaiz] （利用）information derived[di'raiv] （得自，引源于）from other sciences。

。

69. Snow aids farmers by keeping heart in the lower ground levels, thereby saving the seeds from freezing。

70. Even though the precise[pri'sais]（严格的，明确的，精确的）qualities（质量，品质，特性）of hero in literary['lit?r?ri]（文学的，书面的，精通文学的）words may vary over time, the basic exemplary[iɡ'zempl?ri] （典范的，可效仿的）function of the hero seems to remain constant['k?nst?nt]（常数，恒量；经常的，不变的）。

71. People in prehistoric times created paint（绘画颜料）s by grinding [graind]（磨，摩擦，磨碎）materials such as plants and clay [klei]（粘土，一种重要的矿物原料）into power and then adding water。

72. Often very annoying[?'n?ii?] （讨厌的，令人讨厌的）weeds[wi:dz]（野草）, goldenrods ['ɡ?uld?nr?d]（麒麟花）crowd out less hardy plants and act as hosts to many insect['insekt]（昆虫，卑鄙的人）pests。

73. Starting around 7000B.C., and for the next four thousand years, much of the Northern Hemisphere['hemi,sfi?] （半球）experienced temperatures warmer than at present。

74. When Henry Ford first sought[s?:t]（seek过去式或过去分词）financial[fai'n?n??l]（金融的，财政的）backing for（back for:支持）making cars, the very notion of farmers and clerks[klɑ:k; kl?:k] （办事员，文员）owning automobiles was considered ridiculous[ri'dikjul?s]（荒谬的，可笑的）。

75. Though once quite large the population of the bald[b?:ld]（秃头的）eagle ['i:ɡl] （鹰）（bald eagle:秃鹰，比喻秃头的政治家）across North America has drastically['dr?stik?li]（彻底的，激烈的）declined[di'klain]（衰微，跌落）in the past forty years。

76. The beaver['bi:v?] （海狸）chews[t?u:]（咀嚼，咬碎，细想）down trees to get food and material with which to build its home。

77. Poodles['pu:dl]（狮子狗）were once used as retrievers[ri'tri:v?] （猎犬）in duck hunting, but the American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets。

78. As a result of what is now know in physics and chemistry, scientists have been able to make important discoveries in biology and medicine。

79. The practice of making excellent films based on rather obscure[?b'skju?, ?b-] （模糊的，

昏暗的，使难以理解）novels has been going on so long in the United States as to constitute a tradition。

80. Since the consumer considers the best fruit[fru:t] （水果，产物；使结实）to be that which is the most attractive, the grower must provide products that satisfy the discerning [di's?:ni?, -'z?:-] （有辨识能力的，眼光敏锐的）eye。

81. Television the most pervasive[p?:'veisiv, p?-] （普遍的，到处渗透的）and persuasive [p?'sweisiv, -ziv] （有说服力的，劝说的）of modern technologies, marked by rapid['r?pid]

（迅速的，极快的）change and growth, is moving into a new era, an era of extra ordinary sophistication[s?,fisti'kei??n]（复杂，老于世故，有教养的）and versatility['v?:s?tail]（多才多艺的，多方面的）, which promises to reshape our lives and our world。

82. Television is more than just an electronics; it is a means of expression, as well as a vehicle['vi:ikl, 有时发'vi:hi-] （车辆，交通工具，运载工具）for communication, and as such becomes a powerful tool for reaching other human beings。

83.Even more shocking is the fact that the number and rate of imprisonment[im'priz?nm?nt]（监禁，关押，坐牢）have more than doubled over the past twenty years, and recidivism[ri'sidiviz?m]（再犯，累犯）------that is the rate for re-arrest-[?'rest] （逮捕，阻止）-----is more than 60percent。

84.William Rainey Harper lured[lju?] （诱惑，引诱，吸引）him to the new university of Chicago, where he remained officially for exactly a generation and where his students in advanced composition found him terrifyingly['terifaii?li]（惊人的，令人害怕的）frigid ['frid?id] （寒冷的，严寒的，冷淡的）in the classroom but sympathetic[,simp?'θetik] （同情的；容易感受的人，交感神经）and understanding in their personal conferences['k?nf?r?ns](会议，personal conferences :私下交谈)。

85. The sloth[sl?θ]（树懒，懒惰）pays such little attention to its personal hygiene['haid?i:n] （卫生）that green algae['?ld?i:] （水藻，海藻）grow on its coarse [k?:s]（粗糙的，粗俗的，下等的）hair and communities（社区，团体，群体）of a parasitic [,p?r?'sitik]（寄生的）moth [m?θ, m?:θ]（蛾，蛀虫）live in the depths of its coat producing caterpillars['k?t?pil?] （毛毛虫）which graze[greiz]（使吃草，指牛羊）on its mouldy['m?uldi]（发霉的）hair. Its muscles are such that it is quits[kwits]（对等的，两相对消的）incapable[in'keip?bl]（无能力的，不能的）of moving at a speed of over a kilometer an hour even over the shortest distances and the swiftest[swif'test]（最快速的）movement it can make is a sweep[swi:p]（范围，扫除）of its hooked[huk] （钩子，钩住）arm。

86. Artificial[?a:ti′fi??l] （人造的，虚伪的）flowers are used for scientific as well as for

decorative['dek?r?tiv]（装饰性的）purposes. They are made from a variety of materials, such as way and glass, so skillfully that they can scarcely['sk??sli]（几乎不，勉强）be distinguished dis'ti?ɡwi?t]（著名的，卓越的，高贵的；区别）from natural flowers。

87. Three years of research at an abandoned[?'b?nd?nd]（被抛弃的，无约束的）coal[k?ul]（煤）mine（矿山，矿井；开采）in Argonne, Illinois[,ili'n?i(z)]（美国州名）, have resulted in findings that scientists believe can help reclaim[ri'kleim]（开拓，回收再利用，改造，抗议）thousands of mine disposal[dis'p?uz?l] （处理，销毁，处置）sites（网站，遗址，举办地点）that scar[skɑ:]（创伤，留下痕迹）the coal-rich regions['ri:d??n]（地区，地域，地带）of the United States。

88. When the persuading and the planning for the western railroads had finally been completed, the really challenging task remained: the dangerous, sweaty['sweti]（出汗的，吃力的）, backbreaking（非常辛苦的，费力的）, brawling['br?:li?] （争吵，渲嚷）business of actually building the lines。

89. Because of the space crunch, the Art Museum has become increasingly[in'kri:si?li] （越来越多的，渐增的）cautious['k?:??s]（谨慎的，十分小心的）in considering acquisitions[,?kwi'zi??n] （获得，所获之物）and donations[d?u'nei??n] （捐赠物，捐款）of art, in some cases passing up opportunities to strengthen is collections。

90. The United States Constitution [,k?nsti'tju:??n]（宪法，章程，体制）requires that President be a natural-born citizen, thirty-five years of age or older, who has lived in the United States for a minimum ['minim?m]（最小，最小量）of fourteen years。

91. Arid （不毛的）regions in the southwestern United States have become increasingly inviting playgrounds for the growing number of recreation[,rekri'ei??n, -kri:-] （娱乐，消遣，修养）seekers who own vehicles['vi:ikl] （传播媒介，交通工具）such as motorcycles or powered trail [treil] （追踪，拖，小径，痕迹）bikes and indulge[in'd?ld?]（纵情于，放纵，迁就）in（词组表示的含义：沉溺于）hill-climbing contests['k?ntest]（竞争，争论，竞赛）or in

caving['keivi?]（洞穴探险）new trails in the desert。

92. Stone does decay[di'kei]（衰退，腐烂，腐朽）, and so tools of long ago have remained

when even the bones of the man who made them have disappeared without trace[treis]（痕迹，踪迹）。

93. Insects would make it impossible for us to live in the world; they would devour[di'vau?]

（吞噬，毁灭）all our crops and kill our flocks[fl?k]（群）and herds[h?:d]（兽群）（词组表示牛养）, if it were not for the protection we get from insect-eating animals。

94. It is true that during their explorations they often faced difficulties and dangers of the most perilous['peril?s]（危险的，冒险的）nature, equipped in a manner ['m?n?]（样子，礼貌，风格，方式in a manner:在某种程度上，在某种意义上）which would make a modern climber shudder['??d?] （战栗，发抖）at the thought, but they did not go out of their way to court[k?:t]（法院，庭院；追求）such excitement。

95. There is only one difference between an old man and a young one: the young man has a glorious['ɡl?:ri?s]（光荣的）future before him and old one has a splendid['splendid] （辉煌的，灿烂的，极好的）future behind him: and maybe that is where the rub[r?b] （摩擦，障碍）is。

96. I find young people exciting. They have an air of freedom, and they have not a dreary['dri?ri]（沉闷的，枯燥的）commitment to mean ambitions[?m'bi??n] （野心，有野心，雄心，追求）or love comfort['k?mf?t]（安慰，舒适，安慰者）. They are not anxious social climbers, and they have no devotion[di'v?u??n] （献身，奉献，忠诚，热爱）to material things。

97. I am always amazed[?'meizd] （惊奇的，使惊奇，使糊涂）when I hear people saying that sport creates goodwill['ɡud'wil]（友好，善意）between the nations, and that if only the common peoples of the world could meet one another at football or cricket['krikit]（板球运动，蟋蟀）, they would have no inclination[,inkli'nei??n] （倾向，爱好，斜坡）to meet on the battlefield。

98. It is impossible to say simply for the fun[f?n]（乐趣，玩笑，有趣的人或事）and exercise: as soon as the question of prestige[pre'sti:?, -'sti:d?, 'prestid?]（威望，声誉，声望）arises, as soon as you feel that you and some larger unit will be disgraced[dis'greist] （disgrace的过去式或过去分词；失宠的，遭贬谪的）if you lose, the most savage['s?vid?]（野蛮的，残酷的，荒凉的；未开化的的，粗鲁的人；乱咬，粗暴的对待）combative['k?mb?tiv]（好战的，好事的）instincts['insti?kt] （instinct的复数，本能，直觉）are around。

99. It has been found that certain bats emit[i'mit]（发出，喷出）squeaks[skwi:k]（吱吱声；以短促的尖声发出）and by receiving the echoes（回声，共鸣，发出回声）, they can locate and steer[sti?] （引导，驾驶，航行）clear of obstacles['?bst?kl]（障碍）------or locate flying insects on which they feed. This echo-location in bats is often compared with radar['reid?]（雷达，无线电波探测器）, the principle['prins?pl]（原则，原理，主意，信念）of which is similar。

100. As the time and cost of making a clip[klip] （修剪，夹牢，痛打；夹子）drop（下跌到，跌倒）to a few days and a few hundred dollars, engineers may soon be free to let their imaginations soar[s?:]（高飞，高涨，往上飞舞）without being penalized['pi:n?laiz]（处罚，处刑，使不利）by expensive failure。