用100个句子记完3000个单词！
1
Typical of the grassland dwellers ofthecontinent is the American antelope, or pronghorn.
美洲羚羊 或称叉角羚是该动物典型的草原动物。
2
Of the millions who saw Haley’s cometin 1986, how many people will live long enough to see it return in thetwenty-first century.
1986年看见哈雷彗星的千百万人当中 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
Anthropologists have discovered thatfear, happiness, sadness and surprise are universally reflected in facialexpressions.
人类学家们已经发现 恐惧、快乐、悲伤和惊奇都会形之于色这在全人类是共通的。
4
Because of its irritating effect onhumans, the use of phenol as a general antiseptic has been largelydiscontinued.
由于苯酚对人体带有刺激性作用它基本上已不再被当作常用的防腐剂。
5
In group to remain in existence, aprofit-making organization must, in the long run, produce something consumersconsider useful or desirable.
任何盈利组织若要生存 最终都必须生产处消费者可用或需要的产品。
6
The greater the population there is ina locality, the greater the need there is for water, transportation, anddisposal 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 that vague expressions thatonly obscure one’s meaning.
简明、直接、有力的写作难于花哨、含混而意义模糊的表达。
8
With modern offices becoming moremechanized, designers are attempting to personalize them with warmer, lesssevere interiors.
随着现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有亲切感。
9
The difference between libel andslander is that libel is printed while slander is spoken.
诽谤和流言的区别在于前者是书面的而后者是口头的。
10
The knee is the joints where the thighbone meets the large bone of the lower leg.
膝盖是大腿骨和小腿胫的连接处。
11
Acids are chemical compounds that, inwater solution, have a sharp taste, a corrosive action on metals, and theability to turn certain blue vegetable dyes red.
酸是一种化合物 它在溶于水时具有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 Holiday’s reputation as a greatjazz-blues singer rests on her ability to give emotional depth to her songs.
Billie Holiday's作为一个爵士布鲁斯乐杰出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种抽象和符号化的表达。
14
Long before children are able to speakor understand a language, they communicate through facial expressions and bymaking noises.
儿童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 nowgrow abundantly in areas where once nothing but cacti and sagebrush could live.
受当代灌溉（技术设施）之赐 农作物在原来只有仙人掌和荞属科植物才能生存的地方旺盛地生长。
16
The development of mechanicaltimepieces spurred the search for more accurate sundials with which to regulatethem.
机械计时器的发展促使人们寻求更精确的日晷一边校准机械计时器。
17
Anthropology is a science in thatanthropologists use a rigorous set of methods and techniques to documentobservations that can be checked by others.
人类学是一门科学 因为人类学家采用一整套强有力的方法和技术来记录观测结果而这样记录下来的观测结果是供他人核查的。
18
Fungi are important in the process ofdecay, which returns ingredients to the soil, enhances soil fertility, anddecomposes 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与土壤提高其肥力 并分解动物粪便。
19
When it is struck, a tuning forkproduces an almost pure tone, retaining its pitch over a long 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 inthe southeastern part of the United States, they are found as far north as Ohioand Illinois.
虽然美洲山河桃树最集中于美国的东南部但是在北至俄亥俄州及伊利诺州也能看见它们。
21
Eliminating problems by transferringthe blame to others is often called scape-goating.
用怪罪别人的办法来解决问题通常被称为寻找替罪羊。
22
The chief foods eaten in any countrydepend largely on what grows best in its climate and soil.
一个国家的主要食物是什么 大体取决于什么作物再起天气和土壤条件下生长得最好。
23
Over a very large number of trials, theprobability of an event’s occurring is equal to the probability that it willnot occur.
在大量的实验中 某一事件发生的几率等于它不发生的几率。
24
Most substance contract when theyfreeze so that the density of a substance’s solid is higher than the density ofits liquid.
大多数物质遇冷收缩所以它们的密度在固态时高于液态。
25
The mechanism by which brain cellsstore 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 the twentieth century,painters and sculptors in the United States had begun to exert a greatworldwide 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 liesthe 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
Elizabeth Blackwell, the first womanmedical doctor in the United States, founded the New York Infirmary, aninstitution 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 hisfamily that he would rather be remembered as a teacher of the deaf than as theinventor of the telephone.
Alexander Graham Bell曾告诉家人 他更愿意让后人记住他是聋子的老师 而非电话的发明者。
30
Because its leaves remain green longafter 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, bonesexhibit a degree of elasticity that enables the skeleton to withstandconsiderable 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应的打击。
32
That xenon could not FORM chemicalcompounds 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 isdirected toward improving the ability to predict these events and thus tominimize damage and avoid loss of life.
对风暴动力学的研究是为了提高风暴预测从而减少损失避免人员伤亡。
34
The elimination of inflation wouldensure that the amount of money used in repaying a loan would have the samevalue 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
Futurism, an early twentieth-centurymovement in art, rejected all traditions and attempted to glorify contemporarylife by emphasizing the machine and motion.
未来主义 二十世纪早期的一个艺术思潮拒绝一切传统 试图通过强调机械和动态来美化生活。
36
One of the wildest and mostinaccessible parts of the United States is the Everglades where wildlife isabundant 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而且大多受（法律）保护。
37
Lucretia Mott’s influence was sosignificant that she has been credited by some authorities as the originator offeminism in the United States.
Lucretia Mott’s的影响巨大 所以一些权威部门认定她为美国女权运动的创始人。
38
The activities of the internationalmarketing researcher are frequently much broader than those of the domesticmarketer.
国际市场研究者的活动范围常常较国内市场研究者广阔。
39
The continental divide refers to animaginary line in the North American Rockies that divides the waters flowinginto the Atlantic Ocean from those flowing into the Pacific.
大陆分水岭是指北美落基山脉上的一道想象线该线把大西洋流域和太平洋流域区分开来。
40
Studies of the gravity field of theEarth indicate that its crust and mantle yield when unusual weight is placed onthem.
对地球引力的研究表明 在不寻常的负荷之下地壳和地幔会发生位移。
41
The annual worth of Utah’smanufacturing is greater than that of its mining and farming combined.
犹他州制造业的年产值大于其工业和农业的总和。
42
The wallflower is so called because itsweak stems often grow on walls and along stony cliffs for support.
墙花之所以叫墙花 是因为其脆弱的枝干经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 ofsocial psychology.
社会心理学的主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 ElizabethWilliams’ enthusiasm more than the expansion of educational facilities for immigrantsto 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 roundedwings that enable them to spring into full flight instantly when disturbed intheir hiding places.
典型的鹌鹑都长有短而圆的翅膀 凭此他们可以在受惊时一跃而起飞离他们的躲藏地。
46
According to anthropologists, theearliest ancestors of humans that stood upright resembled chimpanzees facially,with sloping foreheads and protruding brows.
根据人类学家的说法 直立行走的人的鼻祖面部轮廓与黑猩猩相似额头前倾眉毛突出。
47
Not until 1866 was the fully successfultransatlantic 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 Ransomdescribes what he considers the spiritual barrenness of society brought aboutby science and technology.
John Crowe Ransom在他的著作中描述了他认为是由科学技术给社会带来的精神贫困。
49
Children with parents whose guidance isfirm, consistent, and rational are inclined to possess high levels ofself-confidence.
父母的教导如果坚定 始终如一和理性孩子就有可能充满自信。
50
The ancient Hopewell people of NorthAmerica probably cultivated corn and other crops, but hunting and gatheringwere still of critical importance in their economy.
北美远古的Hopewell人很可能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 toput a large amount of information on a single map.
使用多种多样的符号可以在一张地图里放进大量的信息。
52
Anarchism is a term describing acluster of doctrines and attitudes whose principal uniting feature is thebelief 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主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 thedaily lives of most people in the United States than did Henry Ford a pioneerin automobile production.
恐怕没有谁对大多数美国人的日常生活影响能超过汽车生产的先驱亨利·福特。
54
The use of well-chosen nonsense wordsmakes possible the testing of many basic hypotheses in the field of languagelearning.
使用精心挑选的无意义词汇 可以检验语言学科里许多基本的假定。
55
The history of painting is afascinating chain of events that probably began with the very first picturesever made.
优化历史是由一连串的迷人事件组成其源头大概可以上溯到最早的图画。
56
Perfectly matched pearls, strung into anecklace, bring a far higher price than the same pearls sold 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, LittleTurtle was chief of the Miami tribe whose territory became what is now Indianaand Ohio.
十八世纪时 “小乌龟”是迈阿密部落的酋长 该部落的地盘就是今天的印第安纳州和俄亥俄州。
58
Among almost seven hundred species ofbamboo, some are fully grown at less than a foot high, while others can growthree 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, prudentnavigators learn the sea charts, study the sailing directions, and memorizelighthouse locations to prepare themselves for any conditions they mightencounter.
谨慎的航海员在出航前 会研究航向记录灯塔的位置 以便对各种可能出现的情况做到有备无患。
60
Of all the economically importantplants, 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 should be aware ofnew developments in technology can and does affect marketing activities.
购买者和销售者都应该留意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 controlsmade possible by the microprocessor and computer storage have multiplied theuses of the modern typewriter.
电脑储存和由于电子微处理机得以实现的电控运用成倍的增加了现代打字机的功能。
63
The human skeleton consists of morethan two hundred bones bound together by tough and relatively inelasticconnective tissues called ligaments.
人类骨骼由两百多块骨头组成 这些骨头是由坚韧而相对缺乏弹性的被称为韧带的结缔组连在一起。
64
The pigmentation of a pearl isinfluenced by the type of oyster in which it develops and 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 mimicthe songs and calls of many birds, they can nonetheless be quickly identifiedas mockingbirds by certain aural clues.
66
Not only can walking fish live out ofwater, but they can also travel short distances over land.
鲇鱼不仅可以离开水存活 还可以在岸上短距离移动。
67
Scientists do not know why dinosaursbecame extinct, but some theories postulate that changes in geography, climate,and sea levels were responsible.
科学家不知道恐龙为何绝种了 但是一些理论推断是地理气候和海平面的变化造成的。
68
The science of horticulture, in whichthe primary concerns are maximum yield and superior quality, utilizesinformation derived from other sciences.
主要目的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 heat inthe lower ground levels, thereby saving the seeds from freezing.
雪对农民是一种帮助 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 ofhero in literary words may vary over time, the basic exemplary function of thehero 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亘古不变的。
71
People in prehistoric times createdpaints by grinding materials such as plants and clay into powder and thenadding 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, goldenrodscrowd out less hardy plants and act as hosts to many insect pests.
黄菊花通常令人生厌 它挤走不那么顽强的植物并招来很多害虫。
73
Starting around 7000 B.C., and for thenext four thousand years, much of the Northern Hemisphere experiencedtemperatures 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现在高。
74
When Henry Ford first sought financialbacking for making cars, the very notion of farmers and clerks owningautomobiles was considered ridiculous.
当亨利·福特最初制造汽车为寻求资金支持时 农民和一般职员也能拥有汽车的想法被认为是可笑的。
75
Though once quite large, the populationof the bald eagle across North America has drastically declined in the pastforty years.
北美秃头鹰的数量一度很多 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 foodand material with which to build its home.
水獭啃倒树木 以便取食物并获得造窝的材料。
77
Poodles were once used as retrievers induck hunting, but the American Kennel Club does not consider them sporting dogsbecause 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但是美国Kennel Club却不承认它们为猎犬因为它们现在大多数作为宠物饲养。
78
As a result of what is now know inphysics and chemistry, scientists have been able to make important discoveriesin 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获得重大发现。
79
The practice of making excellent filmsbased on rather obscure novels has been going on so long in the United Statesas to constitute a tradition.
根据默默无闻的小说制作优秀影片在美国由来已久已经成为传统。
80
Since the consumer considers the bestfruit to be that which is the most attractive, the grower must provide productsthat satisfy the discerning eye.
因为顾客认为最好的水果应该看起来也是最漂亮的所以种植者必须提供能满足挑剔眼光的产品。
81
Television the most pervasive andpersuasive of modern technologies, marked by rapid change and growth, is movinginto a new era, an era of extraordinary sophistication and versatility, whichpromises 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现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 anelectronics; it is a means of expression, as well as a vehicle forcommunication, and as such becomes a powerful tool for reaching other humanbeings.
电视不仅仅是一件电器；它是表达的手段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 thenumber and rate of imprisonment have more than doubled over the past twentyyears, and recidivism—that is the rate fore re-arrest—is more than 60 percent.
更让人吃惊的事实是监禁的数目和比例在过去的二十年中翻了一番还有余以及累犯率——即再次拘押的比例——为百分之六十强
84
His teaching began at the MassachusettsInstitute of Technology, but William Rainey Harper lured him to the newuniversity of Chicago, where he remained officially for exactly a generationand where his students in advanced composition found him terrifyingly frigid inthe classroom but sympathetic and understanding in their personal conferences.
他的教书生涯始于麻省理工学院 但是William Rainey Harper把他吸引到了新成立的芝加哥大学 他在那里正式任职长达整整一代人的时间 他的高级作文课上的学生觉得他在课上古板得可怕但私下交流却富有同情和理解。
85
The sloth pays such little attention toits personal hygiene that green algae grow on its coarse hair and communitiesof a parasitic moth live in the depths of its coat producing caterpillars whichgraze on its mouldy hair. Its muscles are such that it is quits incapable ofmoving at a speed of over a kilometer an hour even over the shortest distancesand the swiftest movement it can make is a sweep of its hooked arm.
树懒极不讲究卫生以至于它粗糙的毛发上生出绿苔成群的寄生蛾生长在它的皮毛深处变成毛毛虫 并以它的脏毛为食。它的肌肉不能让它哪怕在很短的距离以内以每小时一公里的速度移动。它能做的最敏捷的动作就是挥一挥它弯曲的胳膊。
86
Artificial flowers are used forscientific as well as for decorative purposes. They are made from a variety ofmaterials, such as wax and glass, so skillfully that they can scarcelydistinguished from natural flowers.
人造花卉既可用于科学目的 也可用于装饰目的它们可以用各种各样的材料制成 譬如蜡和玻璃；其制作如此精巧 几乎可以以假乱真。
87
Three years of research at an abandonedcoal mine in Argonne, Illinois, have resulted in findings that scientistsbelieve can help reclaim thousands of mine disposal sites that scar thecoal-rich regions of the United States.
在伊利诺州Argonne市的一个废弃煤矿的三年研究取得了成果 科学家们相信这些成果可以帮助改造把美国产煤区弄得伤痕累累的数千个旧煤场。
88
When the persuading and the planningfor the western railroads had finally been completed, the really challengingtask remained: the dangerous, sweaty, backbreaking, brawling business ofactually building the lines.
当有关西部铁路的说服和规划工作终于完成后真正艰难的任务还没有开始；即危险 吃力 需要伤筋动骨和吵吵嚷嚷的建造这些铁路的实际工作。
89
Because of the space crunch, the ArtMuseum has become increasingly cautious in considering acquisitions anddonations of art, in some cases passing up opportunities to strengthen iscollections.
由于空间不足艺术博物馆在考虑购买和接受捐赠的艺术品是越来越慎重有些情况下放弃其进一步改善收藏的机会。
90
The United States Constitution requiresthat President be a natural-born citizen, thirty-five years of age or older,who has lived in the United States for a minimum of fourteen years.
美国宪法要求总统是生于美国本土的公民三十五岁以上 并且在美国居住了至少十四年。
91
Arid regions in the southwestern UnitedStates have become increasingly inviting playgrounds for the growing number ofrecreation seekers who own vehicles such as motorcycles or powered trail bikesand indulge in hill-climbing contests or in caving new trails in the desert.
美国西部的不毛之地正成为玩耍的地方对越来越多拥有摩托车或越野单车类车辆的 喜欢放纵与爬坡比赛或开辟新的沙漠通道的寻欢作乐者具有不断增长的吸引力。
92
Stone does not decay, and so tools oflong ago have remained when even the bones of the man who made them havedisappeared without trace.
石头不会腐烂 所以以前的（石器）工具能保存下来虽然它们的制造者已经消失得无影无踪。
93
Insects would make it impossible for usto live in the world; they would devour all our crops and kill our flocks andherds, if it were not for the protection we get from insect-eating animals.
昆虫就将会使我们无法在这个世界上居住；如果我们没有受到以昆虫为食的动物的保护昆虫就会吞嚼掉我们所有的庄稼并杀死我们饲养的禽兽。
94
It is true that during theirexplorations they often faced difficulties and dangers of the most perilousnature, equipped in a manner which would make a modern climber shudder at thethought, but they did not go out of their way to court such excitement.
确实 他们在探险中遇到了极具威胁性的困难和危险而他们的装备会让一个现代登山者想一想都会浑身战栗。不过他们并不是刻意去追求刺激的。
95
There is only one difference between anold man and a young one: the young man has a glorious future before him and oldone has a splendid future behind him: and maybe that is where the rub is.
老人和年轻人之间只有一个区别：年轻人的前面有辉煌的未来老年人灿烂的未来却已在他们身后。这也许就是困难之所在。
96
I find young people exciting. They havean air of freedom, and they have not a dreary commitment to mean ambitions orlove comfort, and they have no devotion to material things.
我们为年轻人振奋。他们带有自由的气息他们不会为狭隘的野心和贪婪享受而孜孜以求。他们不是焦虑的向上爬的人 他们不会对物质性的东西难舍难分。
97
I am always amazed when I hear peoplesaying that sport creates goodwill between the nations, and that if only thecommon peoples of the world could meet one another at football or cricket, theywould have no inclination to meet on the battlefield.
每次我听说体育运动能够在国家间建立起友好感情说世界各地的普通人只要能在足球场或板球场上相遇就会没有兴趣在战场上相遇的话 我都倍感诧异。
98
It is impossible to say simply for thefun and exercise: as soon as you feel that you and some larger unit will bedisgraced if you lose, the most savage combative instincts are aroused.
没有可能仅仅为了娱乐或锻炼而运动：一旦有了问题一旦你觉得你输了你和你所属团体会有失体面时 你最野蛮的好斗本能就会被激发出来。
99
It has been found that certain batsemit squeaks and by receiving the echoes, they can locate and steer clear ofobstacles—or locate flying insects on which they feed. This echo-location inbats is often compared with radar, the principle of which is similar.
人们已经发现 某些蝙蝠发出尖叫声并靠接受回响来锁定和避免障碍物——或者找到它们赖以为生的昆虫。蝙蝠这种回响定位法常用来和原理与之很相近似的雷达相比。
100
As the time and cost of making a clipdrop to a few days and a few hundred dollars, engineers may soon be free to lettheir imaginations soar without being penalized by expensive failure.
随着芯片制造时间和费用降低到了几天和几百美元工程师们可能很快可以任他们的想象驰骋而不会被昂贵的失败所惩罚。