1 . 科学家曾相信:氙气是不能形成化合物的。
2 . content 内容
3 . 人类学家们已经发现,恐惧,快乐,悲伤和惊奇都会行之于色,这在全人类是共通的。
4 . precision n精确,精密度,精度
5 . As the time and cost of making a clip drop to a few days and a few hundred dollars, engineers may soon be free to let their imaginations soar without being penalized by expensive failure
6 . skyscraper 摩天大楼
7 . 在伊利诺伊州Angonne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。
8 . depression 沮丧;低沉
9 . adj 新的;现代的;初次的;初见的
10 . It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscure one’s meaning
1 . Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises
2 . creativity 创造性
3 . 美洲羚羊,或称叉角羚,是该大陆典型的草原动物。
4 . outlook 观点;景色
5 . 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。
6 . 诽谤和流言的区别在于前者是书面的,而后者是口头的。
7 . beneficiacry 受益人
8 . 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。
9 . ever since 从那时起,自那时以来
10 . The application of electronic controls made possible by the microprocessor and computer storage have multiplied the uses of the modern typewriter
1 . gallery 美术馆
2 . 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。
3 . purity 纯洁性
4 . soul 灵魂
5 . flexibility 灵活性
6 . license 执照
7 . 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。
8 . 想象会弥补我们知识的不足。
9 . By the middle of the twentieth century, painters and sculptors in the United States had begun to exert a great worldwide influence over art
10 . As a result of what is now know in physics and chemistry, scientists have been able to make important discoveries in biology and medicine
1 . withdrawal 退出;撤退
2 . Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others
3 . 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它们身后。这也许就是困难之所在。
4 . detour 绕道
5 . what if 如果将会怎样
6 . 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。
7 . 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。
8 . indifference 不关心
9 . Essentially, a theory is an abstract, symbolic representation of what is conceived to be reality
10 . 简明,直接,有力的写作难于花哨,含混而意义模糊的表达。
1 . criteria 条件
2 . inequality 不平等
3 . A watched pot is long in Boiling
4 . teenager 青少年
5 . 有事实根据的判断。This is an informal expression
6 . horizon 地平线
7 . threshold 开端
8 . 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。
9 . 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。
10 . correlation 相关性
1 . humanity 人性
2 . specialty 专业
3 . contentment 满意;满足
4 . intellectual 知识分子
5 . 一个国家的主要食物是什么,大体取决于什么作物在其天气和土壤条件下生长得最好。
6 . life expectancy/life span 寿命
7 . literacy 读写能力
8 . 【计】 最新式
9 . minority 少数人
10 . When the persuading and the planning for the western railroads had finally been completed, the really challenging task remained: the dangerous, sweaty, backbreaking, brawling business of actually building the lines
1 . That xenon could not FORM chemical compounds was once believed by scientists
2 . domain 领域
3 . stereotype 成见
4 . industry 工业;行业
5 . Three years of research at an abandoned coal mine in Argonne, Illinois, have resulted in findings that scientists believe can help reclaim thousands of mine disposal sites that scar the coal-rich regions of the United States
6 . 马跑到篱笆处突然停了下来。 tempered是什么意思:
7 . disorientation 迷失方向感
8 . 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
9 . 北美远古的Hopewell人很可能种植了玉米和其它农作物,但打猎和采集对他们的经济贸易仍是至关重要的。
10 . 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伊州也能看见它们。
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