61. Admittedly , ensuring sustainable development will require a certain level of sacrifice and arduous efforts on the part of all people . Nonetheless , the accrued returns will both strengthen the nation and ensure a better life for all Chinese citizens .
　　誠然，確保持續(xù)的發(fā)展需要人們做出一定程度的犧牲和辛勤努力。但是，積累的成果不僅能使國家更強大，而且能保證中國公民過上更美好的生活。
　　62. The rapid emergence of homes for senior citizens represents a sharp divergence from the traditional Chinese practice of maintaining the nuclear family at all costs .
　　老人療養(yǎng)院的迅速出現(xiàn)體現(xiàn)了與中國傳統(tǒng)的不惜一切代價維持核心家庭的做法的顯著分歧。
　　63. Participating in interactive experiences beneficial to all is something that no one should miss . The valuable lessons learned therefrom should not be arbitrarily dismissed , but should instead be treasured .
　　參加對所有人都有益的互動式體驗是任何一個人都不應該錯過的。從中獲得的寶貴經(jīng)驗不應該任意拋棄，而應該倍加珍惜。
　　64. Abortion advocates may be correct in their assertion that the practice is a necessary tool of population control , but they seem to neglect the preciousness of human life in its earliest stages .
　　人工流產(chǎn)的提倡者認為它是控制人口的一種必要手段。他們也許是對的，但他們可能忽略了人的生命在比較初階段的寶貴。
　　65. Some people assert that nothing is impossible . Such people should get a grip on reality and understand it’s impossible to create another Universe . In more down-to-earth terms , it’s impossible to know with any certainty whether you will live or die tomorrow .
　　一些人斷言沒有什么事是不可能的。這些人應該把握現(xiàn)實，知道再造一個宇宙是不可能的。更現(xiàn)實的說法是不可能明確知道明天你會活著還是會死。
　　66. Two major factors contributed to devastating summer flooding along the Yangtze River and its tributaries . First , erosion resulting from excessive deforestation in the upper reaches of the river and , second ,heavy silting which raised the riverbed in the main channel .
　　兩個主要因素導致了夏季長江及其支流的特大洪水。第一，過度砍伐引起的河流上游的侵蝕，第二，嚴重的泥沙淤積抬高了主干道的河床。
　　67. Greed and a total lack of social consciousness have been cited as major reasons for the dramatic rise corruption .
　　人們認為貪婪和社會意識的徹底缺乏是造成腐敗急劇增加的主要原因。
　　68. There are several reasons for the marked increase in China’s crime rate—the dramatic influx of itinerant workers in urban areas ; declining social values ; and widening disparities between the haves and have-nots .
　　中國的犯罪率顯著升高有很多原因——城區(qū)大量流動工人的涌入；社會價值的貶低以及貧富之間日益擴大的差距。
　　69. Why are an increasing number of elderly Chinese parents living apart from their children ? One reason is the increasing upward mobility of the younger generation . Another is expanding social opportunities for the elderly . Perhaps the main reason , however , centers on dramatic changes in traditional concepts .
　　為什么越來越多的中國老人不和他們的孩子住在一起？原因之一是年輕一代的上進心增強了。另一個原因是社會上老人的機會增加了。然而，主要的原因可能是傳統(tǒng)觀念發(fā)生了巨大變化。
　　70. What has sparked the increasing interest in exercise ? For one thing , people have gained a greater awareness of the need for physical fitness . For another , the constantly improving standard of living enables Chinese people to patronize the increasing number of recreational venues . The main thing perhaps centers on the healthcare and psychological benefits exercise provides .
　　什么引發(fā)了人們對鍛煉越來越濃的興趣？一方面，人們更加清楚地意識到保持身體健康的必要性。另一方面，不斷提高的生活水平使中國人能夠支付增加的娛樂支出。比較主要的可能在于鍛煉帶來的保健和心理上的好處。

　　71. Identifying the reasons for an emerging phenomenon which involves several complicated factors is far from an easy task . For example , some scientists attribute environmental deterioration to a series of natural factors , while others place the blame solely on inappropriate human behavior .
　　要找到涉及許多復雜因素的新現(xiàn)象的原因遠非一件易事。例如，一些科學家把環(huán)境的惡化歸結(jié)為一些自然因素，而另一些人把責任都推在人類不適當?shù)男袨樯稀?
　　72. One doesn’t have to look far to realize the direct correlation between smoking and cancer .
　　人們不用花費很大力氣就能發(fā)現(xiàn)抽煙和癌癥之間的直接聯(lián)系。
　　73. The explanation for the phenomenon of the rising teenage suicide rate involves many complicated factors . Some attribute the rise to an overemphasis on early success , others point to mounting peer pressure , and still others to confusion over changing social values .
　　對上升的少年自殺率的解釋涉及很多復雜的因素。有的人把上升的原因歸結(jié)為過分強調(diào)少年時期的成功，有的人指出是因為不斷增長的同伴之間的壓力，還有人認為是對不斷變化的社會價值的迷茫造成的。
　　74. The reasons for antisocial behavior are both complicated and varied . I suggest the phenomenon results from inappropriate role models and the lack of well-defined norms of behavior . However , the main reason is quite likely the continuing degeneration of social values .
　　反社會行為的原因既復雜又多樣。我認為這種現(xiàn)象是不恰當?shù)慕巧�典型和缺少行為�?guī)范的很好的定義造成的。然而，主要原因很可能是不斷貶低的社會價值。
　　75. The causes of racial hatred are not readily definable . Sociologists , however , attribute them to the misguided concept of a superior race and an innate mistrust of people of color . Perhaps the main cause is quite simply ignorance .
　　種族仇恨的起因沒有現(xiàn)成的答案。然而，社會學家把原因歸結(jié)為被誤導的更高貴的種族的觀念以及天生的對有色人種的不信任。主要原因可能僅僅是因為無知。
　　76. The scourge of HIV/AIDS currently engulfing the world will quite likely be brought under control within the next few years thanks to the untiring efforts of scientists and researchers worldwide .
　　現(xiàn)在席卷世界的艾滋病的禍害很有可能由于全世界科學家和研究人員的不懈努力在未來幾年內(nèi)得到控制。
　　77. The incidence rate of cancer mainly stems from several factors , including inappropriate diets , poor healthcare practices and the lack of early detection . Continuing medical advances and rising awareness do , however , offer promising hope for the future .
　　癌癥的發(fā)病率主要由以下諸多因素引起，包括不適當?shù)娘嬍�、不好的保健習慣以及沒有及早發(fā)現(xiàn)。然而，醫(yī)學的不斷進步和對此不斷增強的關(guān)注給未來帶來了很大的希望。
　　78. Increased urban pollution levels and the mounting death toll from motor vehicles accidents can mainly be attributed to the glut of automobiles appearing on city roads in recent years . Detrimental factors will quite likely outweigh the benefits of rising automobile usage .
　　城市人口的增長和車禍中死亡率的增加主要是由于近年內(nèi)充斥城市道路的汽車。汽車使用量的增加帶來的有害因素很有可能超過它的好處。
　　79. The rising divorce rate in China can , at least in part , be attributed to spousal incompatibility , disparities in education levels , changing social attitudes and the increasing upward mobility of the younger generation .
　　中國上升的離婚率可以，至少部分可以歸結(jié)為婚姻的不和諧，受教育水平的差異，變化的社會看法以及年輕一代不斷增強的上進心。
　　80. State-owned enterprises are not only failing because of inefficient management , but also because of their inability to awitch operational modes from the former planned economy to the new market economy .
　　國有企業(yè)失敗不僅由于低效的管理，也因為他們不能實現(xiàn)從以前的計劃經(jīng)濟到新的市場經(jīng)濟的運作模式的轉(zhuǎn)換。