【正文】 54. The use of wellchosen nonsense words makes possible the testing of many basic hypotheses in the field of language learning. ，可以檢驗語言學科里許多基本的假定。 62. The application of electronic controls made possible by the microprocessor and puter storage have multiplied the uses of the modern 無效writer. 。 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. ，但其昭世功力卻是恒古不變的。 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. 。他在那里正式任職長達整整一代人的時間。 89. Because of the space crunch, the Art Museum has bee increasingly cautious in considering acquisitions and donations of art, in some cases passing up opportunities to strengthen is collections. ，藝術博物館在考慮購買和接受捐贈的藝術品是越來越慎重，有些情況下放棄其進一步改善收藏的機會。 95. There is only one difference between an old man and a young one: the young man has a glorious future before him and old one has a splendid future behind him: and maybe that is where the rub is. ：年輕人的前面有輝煌的未來，老年人燦爛的未來卻已在它們身后。蝙蝠這種回響定位法常拿來和原理與之很相近似的雷達相比。 98. It is impossible to say simply for the fun and exercise: as soon as the question of prestige arises, as soon as you feel that you and some larger unit will be disgraced if you lose, the most savage bative instincts are around. ：一旦有了問題，一旦你覺得你輸了你和你所屬團體會有失體面時，你最野蠻的好斗本能就會被激發(fā)出來。 　　94. It is true that during their explorations they often faced difficulties and dangers of the most perilous nature, equipped in a manner which would make a modern climber shudder at the thought, but they did not go out of their way to court such excitement. ，他們在探險中遇到了極具威脅性的困難和危險，而他們的裝備會讓一個現代登山者想一想都會渾身顫栗。 87. 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 coalrich regions of the United States. ，科學家們相信這些成果可以幫助改造把美國產煤區(qū)弄得傷痕累累的數千個舊煤場。 83. Even more shocking is the fact that the number and rate of imprisonment have more than doubled over the past twenty years, and recidivismthat is the rate for rearrestis more than 60 percent. ，以及累犯率——即再次拘押的比例——為百分之六十強。 76. The beaver chews down trees to get food and material with which to build its home. ，以便取食物并獲得造窩的材料。 68. The science of horticulture, in which the primary concerns are maximum yield and superior quality, utilizes inFORMation derived from other sciences. 。 60. Of all the economically important plants, palms have been the least studied. ，棕櫚樹得到的研究最少。 52. Anarchism is a term describing a cluster of doctrines and attitudes whose principal uniting feature is the belief that government is both harmful and unnecessary. ，它們的主要共同點在于相信government是有害的，沒有必要的。 enthusiasm more than the expansion of educational facilities for immigrants to the United States. Williams的熱情。 38. The activities of the international marketing researcher are frequently much broader than those of the domestic marketer. 。 33. Research into the dynamics of storms is directed toward improving the ability to predict these events and thus to minimize damage and avoid loss of life. ，避免人員傷亡。 25. The mechanism by which brain cells store memories is not clearly understood. 。 19. When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time. ，產生幾乎純質的音調，其音量經久不衰。s reputation as a great jazzblues singer rests on her ability to give emotional depth to her songs. 12. Billie Holiday39。 the greater the need there is for water, transportation, and disposal of refuse. ，其對水，交通和垃圾處理的需求就會越大。 2. Of the