1、1. Typical of the grassland dwellers of the continent is the American antelope, or pronghorn.美洲羚羊,或称叉角羚,是该大陆经典的草原动物。2. Of the millions who saw Haleys comet in 1986, how many people will live long enough to see it return in the twenty-first century?1986年看见哈雷慧星的千百万人当中,有多少人能够长寿到足以目睹它在二十一世纪的回归呢?3. Anthr
2、opologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.人类学家们已经发觉,恐惧,愉快,悲伤和惊奇都会行之于色,这在全人类是共通的。4. Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.因为苯酚对人体带有刺激性作用,它基本上已不再被当
3、作常用的防腐剂了。5. In group to remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable.任何盈利组织若要生存,最后都必须生产出消费者可用或需要的产品。6. The greater the population there is in a locality; the greater the need there is for water, transportation, and
4、disposal of refuse.一个地方的人口越多,其对水,交通和垃圾处理的需求就会越大。7. It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscure ones meaning.简明,直接,有力的写作难于花哨,含混而意义含糊的体现。8. With modern offices becoming more mechanized, designers are attempting to perso
5、nalize them with warmer, less severe interiors.伴随当代办公室的日益自动化,设计师们正试图利用较为温暖而不太严肃的内部装饰来使其具备亲切感。9. The difference between libel and slander is that libel is printed while slander is spoken.诽谤和流言的区分在于前者是书面的,而后者是口头的。10. The knee is the joints where the thigh bone meets the large bone of the lower leg.膝盖是
6、大腿骨和小腿胫的连接处。11. Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red.酸是一个化合物,它在溶于水时具备强烈的气味和对金属的腐蚀性,并且能够使某些蓝色植物染料变红。12. Billie Holidays reputation as a great jazz-blues singer rests on her abili
7、ty to give emotional depth to her songs.Billie Holidays作为一个爵士布鲁斯乐出色歌手的名声建立在能够赋予歌曲感情深度的能力。13. Essentially, a theory is an abstract, symbolic representation of what is conceived to be reality.理论在本质上是对认识了的现实的一个抽象和符号化的体现。14. Long before children are able to speak or understand a language, they communica
8、te through facial expressions and by making noises.小朋友在能说或能听懂语言之前,很久就会通过面部表情和靠发出噪声来与人交流了。15. Thanks to modern irrigation, crops now grow abundantly in areas where once nothing but cacti and sagebrush could live.受当代浇灌(技术设施)之赐,农作物在本来只有仙人掌和荞属科植物才能生存的地方旺盛的生长。16. The development of mechanical timepieces
9、spurred the search for more accurate sundials with which to regulate them.机械计时器的发展促使人们谋求更精准的日晷,以便校准机械计时器。17. Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to do*英语易网*ent observations that can be checked by others.人类学是一门科学,因为人类学家采取一整套强有力的措施和技术来统计观测成果,而
10、这么统计下来的观测成果是供他人核查的。18. Fungi are important in the process of decay, which returns ingredients to the soil, enhances soil fertility, and decomposes animal debris.真菌在腐化过程中十分重要,而腐化过程将化学物质回馈于土壤,提升其肥力,并分解动物粪便。19. When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a lo
11、ng period of time.音叉被敲击时,产生几乎纯质的音调,其音量经久不衰。20. Although pecans are most plentiful in the southeastern part of the United States, they are found as far north as Ohio and Illinois.虽然美洲山河桃树最集中于美国的东南部不过在北至俄亥俄州及伊利诺州也能看见它们。21. Eliminating problems by transferring the blame to others is often called scape-
12、goating.用怪罪他人的措施来处理问题一般被称为寻找替罪羊。22. The chief foods eaten in any country depend largely on what grows best in its climate and soil.一个国家的重要食物是什么,大体取决于什么作物在其天气和土壤条件下生长得最佳。23. Over a very large number of trials, the probability of an events occurring is equal to the probability that it will not occur.在
13、大量的试验中,某一事件发生的几率等于它不发生的几率。24. Most substance contract when they freeze so that the density of a substances solid is higher than the density of its liquid.大多数物质遇冷收缩,因此他们的密度在固态时高于液态。25. The mechanism by which brain cells store memories is not clearly understood.大脑细胞储存记忆的机理并不为人明白。26. By the middle of t
14、he twentieth century, painters and sculptors in the United States had begun to exert a great worldwide influence over art.到了二十一世纪中叶,美国画家和雕塑家开始在世界范围内对艺术产生重大影响。27. In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center.伊丽莎白市,一个重要的航运和制造业中心,坐落于新泽西州的东部。28.
15、 Elizabeth Blackwell, the first woman medical doctor in the United States, founded the New York Infirmary, an institution that has always had a completely female medical staff. Elizabeth Blackwell,美国第一个女医生,创建了员工一直为女性纽约诊所。29. Alexander Graham Bell once told his family that he would rather be remember
16、ed as a teacher of the deaf than as the inventor of the telephone.Alexander Graham Bell曾告诉家人,他更乐意让后人记住他是聋子的老师,而非电话的创造者。30. Because its leaves remain green long after being picked, rosemary became associated with the idea of remembrance.采摘下的迷迭香树叶常绿不衰,因此人们把迷迭香树与怀念联系在一起。31. Although apparently rigid, b
17、ones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact.骨头看起来是脆硬的,但它也有一定的弹性,使得骨骼能够承受相称的打击。32. That xenon could not FORM chemical compounds was once believed by scientists.科学家曾相信:氙气是不能形成化合物的。33. Research into the dynamics of storms is directed toward improving t
18、he ability to predict these events and thus to minimize damage and avoid loss of life.对风暴乱力学的研究是为了提升风暴预测从而减少损失,防止人员伤亡。34. The elimination of inflation would ensure that the amount of money used in repaying a loan would have the same value as the amount of money borrowed.消除通货膨胀应确保还贷的钱应与所贷款的价值相同。35. F
19、uturism, an early twentieth-century movement in art, rejected all traditions and attempted to glorify contemporary life by emphasizing the machine and motion.将来主义,二十世纪早期的一个艺术思潮。拒绝一切老式,试图通过强调机械和动态来美化生活。36. One of the wildest and most inaccessible parts of the United States is the Everglades where wil
20、dlife is abundant and largely protected.Everglades是美国境内最为荒凉和人迹罕至的地区之一,此处有大量的野生动植物并且大多受(法律)保护。37. Lucretia Motts influence was so significant that she has been credited by some authorities as the originator of feminism in the United States.Lucretia Motts的影响巨大,因此某些权威部门认定她为美国女权运动的创始人。38. The activities
21、 of the international marketing researcher are frequently much broader than those of the domestic marketer.国际市场研究者的活动范围常常较国内市场研究者宽广。39. The continental divide refers to an imaginary line in the North American Rockies that divides the waters flowing into the Atlantic Ocean from those flowing into the
22、 Pacific.大陆分水岭是指北美洛矶山脉上的一道想象线,该线把大西洋流域和太平洋流域辨别开来。40. Studies of the gravity field of the Earth indicate that its crust and mantle yield when unusual weight is placed on them.对地球引力的研究表白,在不寻常的负荷之下地壳和地幔会发生位移。41. The annual worth of Utahs manufacturing is greater than that of its mining and farming comb
23、ined.尤它州制造业的年产值不小于其工业和农业的总和。42. The wallflower is so called because its weak stems often grow on walls and along stony cliffs for support.墙花之因此叫墙花,是因为其脆弱的枝干常常要靠墙壁或顺石崖生长,以便有所依附。43. It is the interaction between people, rather than the events that occur in their lives, that is the main focus of social
24、 psychology.社会心理学的重要焦点是人与人之间的交往,而不是他们各自生活中的事件。44. No social crusade aroused Elizabeth Williams enthusiasm more than the expansion of educational facilities for immigrants to the United States.给美国的新移民增加教育设施比任何社会运动都更多的激发了Elizabeth Williams的热情。45. Quails typically have short rounded wings that enable t
25、hem to spring into full flight instantly when disturbed in their hiding places.经典的鹌鹑都长有短而圆的翅膀,凭此他们能够在受惊时一跃而起,飞离它们的躲藏地。46. According to anthropologists, the earliest ancestors of humans that stood upright resembled chimpanzees facially, with sloping foreheads and protruding brows.依照人类学家的说法,直立行走的人的鼻祖面
26、部轮廓与黑猩猩相同,额头后倾,眉毛突出。47. Not until 1866 was the fully successful transatlantic cable finally laid.直到1866年第一条横跨大西洋的电缆才完全成功的架通。48. In his writing, John Crowe Ransom describes what he considers the spiritual barrenness of society brought about by science and technology.John Crowe Ransom在他的著作中描述了他以为是由科学技
27、术给社会带来的精神贫困。49. Children with parents whose guidance is firm, consistent, and rational are inclined to possess high levels of self-confidence.父母的教诲假如坚定,一直如一和理性,孩子就有也许布满自信。50. The ancient Hopewell people of North America probably cultivated corn and other crops, but hunting and gathering were still o
28、f critical importance in their economy.北美远古的Hopewell人很也许种植了玉米和其他农作物,但打猎和采集对他们的经济贸易仍是至关重要的。51. Using many symbols makes it possible to put a large amount of information on a single map.使用多个多样的符号能够在一张地图里放进大量的信息。52. Anarchism is a term describing a cluster of doctrines and attitudes whose principal uni
29、ting feature is the belief that government is both harmful and unnecessary.无政府主义这个词描述的是一堆理论和态度,它们的重要共同点在于相信政府是有害的,没有必要的。53. Probably no man had more effect on the daily lives of most people in the Untied States than did Henry Ford a pioneer in automobile production.恐怕没有谁对大多数美国人的日常生活影响能超出汽车生产的先驱亨利.福特
30、。54. The use of well-chosen nonsense words makes possible the testing of many basic hypotheses in the field of language learning.使用精心挑选的无意义词汇,能够检查语言学科里许多基本的假定。55. The history of painting is a fascinating chain of events that probably began with the very first pictures ever made.优化历史是由一连串的迷人事件组成,其源头大
31、约能够上溯到最早的图画。56. Perfectly matched pearls, strung into a necklace, bring a far higher price than the same pearls told individually.相互般配的珍珠,串成一条项链,就能卖到比单独售出好得多的价钱。57. During the eighteenth century, Little Turtle was chief of the Miami tribe whose territory became what is now Indiana and Ohio.十八世纪时,小乌龟
32、是迈阿密部落的酋长,该部落的地盘就是今日的印第安那州和俄亥俄州。58. Among almost seven hundred species of bamboo, some are fully grown at less than a foot high, while others can grow three feet in twenty-four hours.在竹子的近七百个品种中,有的全长成还不到一英尺,有的却能在二十四小时内长出三英尺。59. Before staring on a sea voyage, prudent navigators learn the sea charts,
33、 study the sailing directions, and memorize lighthouse locations to prepare themselves for any conditions they might encounter.谨慎的航海员在出航前,会研究航向,统计的灯塔的位置,以便对各种也许出现的情况做到有备无患。60. Of all the economically important plants, palms have been the least studied.在所有的经济作物中,棕榈树得到的研究最少。61. Buyers and sellers shou
34、ld be aware of new developments in technology can and does affect marketing activities.购置者和销售者都应当留心技术的新发展,原因很简单,因为技术能够并且已经影响着营销活动。62. The application of electronic controls made possible by the microprocessor and computer storage have multiplied the uses of the modern typewriter.电脑储存和因为电子微处理机得以实现的电控
35、利用成倍的增加了当代打字机的功效。63. The human skeleton consists of more than two hundred bones bound together by tough and relatively inelastic connective tissues called ligaments.人类骨骼有二百多块骨头组成,住些骨头石油坚韧而相对缺乏弹性的,被称为韧带的结蒂组连在一起。64. The pigmentation of a pearl is influenced by the type of oyster in which it develops a
36、nd by the depth, temperature, and the salt content of the water in which the oyster lives.珍珠的色泽受到作为其母体牡蛎种类及牡蛎生活水域的深度,温度和含盐度的制约。65. Although mockingbirds superbly mimic the songs and calls of many birds, they can nonetheless be quickly identified as mockingbirds by certain aural clues.尽管模仿鸟学诸多个鸟的鸣叫声惟
37、妙惟肖,但人类还是能够依其声音上的线索很快识别它们。66. Not only can walking fish live out of water, but they can also travel short distances over land.鲇鱼不但能够离开水存活,还能够在岸上短距离移动。67. Scientists do not know why dinosaurs became extinct, but some theories postulate that changers in geography, climate, and sea levels were responsi
38、ble.科学家不懂得恐龙为何绝种了,不过某些理论推断是地理,气候和海平面的变化导致的。68. The science of horticulture, in which the primary concerns are maximum yield and superior quality, utilizes information derived from other sciences.重要目标在于丰富和优质的农艺学利用了其他科学的知识。69. Snow aids farmers by keeping heart in the lower ground levels, thereby savi
39、ng the seeds from freezing.雪对农民是一个协助,因为它保持地层土壤的温度,使种子不致冻死。70. Even though the precise qualities of hero in literary words may vary over time, the basic exemplary function of the hero seems to remain constant.历代文学作品中的英雄本色虽各有千秋,但其昭世功力却是恒古不变的。71. People in prehistoric times created paints by grinding m
40、aterials such as plants and clay into power and then adding water.史前的人们制造颜料是将植物和泥土等原料磨成粉末,然后加水。72. Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.黄菊花一般令人生厌,它挤走不那么顽强的植物,并找来诸多害虫。73. Starting around 7000 B.C., and for the next four thousand years
41、, much of the Northern Hemisphere experienced temperatures warmer than at present.大约从公元前七千年开始,在四千年当中,北半球的温度比目前高。74. When Henry Ford first sought financial backing for making cars, the very notion of farmers and clerks owning automobiles was considered ridiculous.当亨利.福特最初制造汽车为谋求资金支持时,农民和一般职工也能拥有汽车的想法
42、被以为是可笑的。75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.北美秃头鹰的数量一度诸多,但在近四十年中全北美的秃头鹰数量急剧下降。76. The beaver chews down trees to get food and material with which to build its home.水獭啃倒树木,以便取食物并取得造窝的材料。77. Poodles were on
43、ce used as retrievers in duck hunting, but the American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets.长卷毛狗曾被用作猎鸭时叼回猎物的猎犬,不过美国Kennel Club却不认可它们为猎犬,因为它们目前大多数作为宠物喂养。78. As a result of what is now known in physics and chemistry, scientists have been able to
44、 make important discoveries in biology and medicine.物理学和化学的一个成果是使得科学家们能在生物学和医学上取得重大发觉。79. The practice of making excellent films based on rather obscure novels has been going on so long in the United States as to constitute a tradition.依照默默无闻的小说制作优秀影片在美国由来已久,已经成为老式。80. Since the consumer considers t
45、he best fruit to be that which is the most attractive, the grower must provide products that satisfy the discerning eye.因为用户以为最佳的水果应当看起来也是最漂亮的,因此种植者必须提供能满足挑剔眼光的产品。81. Television the most pervasive and persuasive of modern technologies, marked by rapid change and growth, is moving into a new era, an
46、era of extraordinary sophistication and versatility, which promises to reshape our lives and our world.电视,这项从迅速变化和成长为标志的最普及和最有影响力的当代技术,正在步入一个新时代,一个极为成熟和多样化的时代,这将重塑我们的生活和世界。82. Television is more than just electronics; it is a means of expression, as well as a vehicle for communication, and as such b
47、ecomes a powerful tool for reaching other human beings.电视不但仅是一件电器;它是体现的伎俩和交流的载体并因此成为联系他人的有力工具。83. Even more shocking is the fact that the number and rate of imprisonment have more than doubled over the past twenty years, and recidivism-that is the rate for re-arrest-is more than 60 percent.更让人吃惊的事实是
48、监禁的数目和百分比在过去的二十年中翻了一番尚有余,以及累犯率即再次拘押的百分比为百分之六十强。84. His teaching began at the Massachusetts Institute of Technology, but William Rainey Harper lured 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 frigid in the classroom but sympat