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(fù)雜因素的新現(xiàn)象的原因遠(yuǎn)非一件易事。例如，一些科學(xué)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(zé)任都推在人類不適當(dāng)?shù)男袨樯稀?/P>

　　72. One doesn't have to look far to realize the direct correlation between smoking and cancer .

　　人們不用花費(fèi)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(fù)雜的因素。有的人把上升的原因歸結(jié)為過分強(qiáng)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(rèn)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(fù)雜又多樣。我認(rèn)為這種現(xiàn)象是不恰當(dāng)?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(xué)家把原因歸結(jié)為被誤導(dǎo)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(xué)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(dāng)?shù)娘嬍场⒉缓玫谋＝×?xí)慣以及沒有及早發(fā)現(xiàn)。然而，醫(yī)學(xué)的不斷進(jìn)步和對此不斷增強(qiáng)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(qiáng)的上進(jìn)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(shí)現(xiàn)從以前的計劃經(jīng)濟(jì)到新的市場經(jīng)濟(jì)的運(yùn)作模式的轉(zhuǎn)換。

　　81. Although we do not know the long-term consequences of separation or deprivation , we do know that they can produce acute immediate distress .

　　雖然我們不知道分離和喪失親人的長期后果，但我們知道它們能立即引起劇烈的悲痛。

　　82. One can raedily trace the disappearance of dinosaurs to a major cataclysmic event .

　　人們很容易把恐龍消失的原因歸結(jié)為重大的災(zāi)難性事件。

　　83. The raesons for poverty are many , but for the most part center on illiteracy , the lack of opportunities and in some cases pure laziness .

　　貧困的原因很多，但主要是因為缺少教育、缺少機(jī)會，有的情況下純粹是由于懶惰。

　　84. Child development depends on a number of factors , both physical and psychological . Correct parental nurturing from infancy through adolescence determines both the physical and mental profile of a mature individual .

　　兒童的發(fā)展取決于很多因素，包括生理的和心理的。從嬰兒期到青春期的正確的家長教育決定一個成熟的個人的體質(zhì)及智力的狀況。

　　85. Factors such as self-condidence and ambition , combined with determination and willpower , contribute to eventual success or failure .

　　自信、雄心，加上決心和毅力等因素是造成最終的成功或失敗的原因。

　　86. Various factors will weigh heavily on China's eventual entry into the World Trade Organization ( WTO ) . One centers on the total abandonment of protectionism , and the other on the adoption of generally accepted international accounting norms .

　　許多因素對中國最終加入世界貿(mào)易組織(WTO)有很大的影響。因素之一是徹底放棄保護(hù)主義，另一個因素是采用普遍接受的國際會計規(guī)范。

　　87. One of the most common failures of people today is to avoid telling the truth . People must realize that avoidance and lying have never in the past and , in fact , never will right a wrong .

　　如今人類最常見的一個不足是不說真話。人們必須意識到不說真話、說謊話在過去沒有，事實(shí)上，將來也永遠(yuǎn)不會變錯誤為正確。

　　88. Central planning has , at least in part , been blamed for the current demise of state-owned enterprises . Perhaps , however , the greatest blame should be placed on factors such as grossly inefficient management ; the rampant practice of " guanxi " , cronyism and nepotism ; excessively large work forces ; abuses of social benefits ; and without a doubt corruption .

　　人們認(rèn)為中央計劃至少是現(xiàn)在國有企業(yè)失敗的部分原因。然而，最主要的原因可能是極低效的管理、關(guān)系的普遍運(yùn)用、任用親信和裙帶關(guān)系、大量過剩的勞動力、社會救濟(jì)金的濫用，當(dāng)然還包括腐敗。

　　89. A recent survey revealed large disparities in the income levels of male and female workers holding the same position . The determining factor should be qualifications , rather than gender , when determining both the salary and position of an individual .

　　最近的一項調(diào)查表明在同樣職位上的男性與女性工人的收入水平存在差異。在決定工人工資和職位的時候，決定因素應(yīng)該是資格，而不是性別。

　　90. Social finesse , willingness to relocate and language capacity are also determinant factora in assessing job qualifications .

　　社交手腕、愿意調(diào)動以及語言能力也是評估工作資格的決定性因素。