【正文】 , the probability of an event’s occurring is equal to the probability that it will not occur. ，某一事件發(fā)生的幾率等于它不發(fā)生的幾率。 27. In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center. ，一個(gè)重要的航運(yùn)和制造業(yè)中心，坐落于新澤西州的東部。 31. Although apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact. ，但它也有一定的彈性，使得骨骼能夠承受相當(dāng)?shù)拇驌簟?35. Futurism, an early twentiethcentury movement in art, rejected all traditions and attempted to glorify contemporary life by emphasizing the machine and motion. ，二十世紀(jì)早期的一個(gè)藝術(shù)思潮。 38. The activities of the international marketing researcher are frequently much broader than those of the domestic marketer. 。 42. The wallflower is so called because its weak stems often grow on walls and along stony cliffs for support. ，是因?yàn)槠浯嗳醯闹Ω山?jīng)常要靠墻壁或順石崖生長，以便有所依附。 46. According to anthropologists, the earliest ancestors of humans that stood upright resembled chimpanzees facially, with sloping foreheads and protruding brows. ，直立行走的人的鼻祖面部輪廓與黑猩猩相似，額頭后傾，眉毛突出。 50. The ancient Hopewell people of North America probably cultivated corn and other crops, but hunting and gathering were still of critical importance in their economy. ，但打獵和采集對(duì)他們的經(jīng)濟(jì)貿(mào)易仍是至關(guān)重要的。 55. The history of painting is a fascinating chain of events that probably began with the very first pictures ever made. ，其源頭大概可以上溯到最早的圖畫。 59. Before staring on a sea voyage, prudent navigators learn the sea charts, study the sailing directions, and memorize lighthouse locations to prepare themselves for any conditions they might encounter. ，會(huì)研究航向，記錄的燈塔的位置，以便對(duì)各種可能出現(xiàn)的情況做到有備無患。 63. The human skeleton consists of more than two hundred bones bound together by tough and relatively inelastic connective tissues called ligaments. ，住些骨頭石油堅(jiān)韌而相對(duì)缺乏彈性的，被稱為韌帶的結(jié)蒂組連在一起。 67. Scientists do not know why dinosaurs became extinct, but some theories postulate that changers in geography, climate, and sea levels were responsible. ，但是一些理論推斷是地理，氣候和海平面的變化造成的。 71. People in prehistoric times created paints by grinding materials such as plants and clay into power and then adding water. ，然后加水。 75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years. ，但在近四十年中全北美的禿頭鷹數(shù)量急劇下降。 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. ，已經(jīng)成為傳統(tǒng)。 it is a means of expression, as well as a vehicle for munication, and as such bees a powerful tool for reaching other human beings. ；它是表達(dá)的手段和交流的載體并因此成為聯(lián)系他人的有力工具。他的高級(jí)作文課上的學(xué)生覺得他在課上古板得可怕，但私下交流卻富有同情和理解。 86. Artificial flowers are used for scientific as well as for decorative purposes. They are made from a variety of materials, such as way and glass, so skillfully that they can scarcely be distinguished from natural flowers. ，也可用于裝飾目的，它們可以用各種各樣的材料制成，臂如蠟和玻璃；其制作如此精巧，幾乎可以以假亂真。 90. The United States Constitution requires that President be a naturalborn citizen, thirtyfive years of age or older, who has lived in the United States for a minimum of fourteen years. ，三十五歲以上，并且在美國居住了至少十四年。 they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insecteating animals. ；如果我們沒有受到以昆蟲為食的動(dòng)物的保護(hù)，昆蟲就會(huì)吞嚼掉我們所有的莊稼并殺死我們飼養(yǎng)的禽獸。這也許就是困難之所在。 97. I am always amazed when I hear people saying that sport creates goodwill between the nations, and that if only the mon peoples of the world could meet one another at football or cricket, they would have no inclination to meet on the battlefield. ，說世界各地的普通人只要能在足球場(chǎng)或板球場(chǎng)上相遇就會(huì)沒有興趣在戰(zhàn)場(chǎng)上相遇的話，我都倍感詫異。 100. 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. ，工程師們可能很快可以任他們的想象馳騁而不會(huì)被昂貴的失敗所懲罰。 running away as the best choiceOne is unworthy of being tolerated if he can’t forgive ，讓別人去說吧.(但丁)