61.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(lèi)不適當(dāng)?shù)男袨樯稀?/p>

　　62.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。

　　63.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(duì)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(guò)分強(qiáng)調(diào)少年時(shí)期的成功，有的人指出是因?yàn)椴粩嘣鲩L(zhǎng)的同伴之間的壓力，還有人認(rèn)為是對(duì)不斷變化的社會(huì)價(jià)值的迷茫造成的。

　　64.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(huì)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(huì)價(jià)值。

　　65.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(méi)有現(xiàn)成的答案。然而，社會(huì)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(duì)有色人種的不信任。主要原因可能僅僅是因?yàn)闊o(wú)知。

　　66.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(lái)幾年內(nèi)得到控制。

　　66.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(méi)有及早發(fā)現(xiàn)。然而，醫(yī)學(xué)的不斷進(jìn)步和對(duì)此不斷增強(qiáng)的關(guān)注給未來(lái)帶來(lái)了很大的希望。

　　68.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(zhǎng)和車(chē)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(chē)。汽車(chē)使用量的增加帶來(lái)的有害因素很有可能超過(guò)它的好處。

　　69.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(guó)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(huì)看法以及年輕一代不斷增強(qiáng)的上進(jìn)心。

　　70.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(guó)有企業(yè)失敗不僅由于低效的管理，也因?yàn)樗麄儾荒軐?shí)現(xiàn)從以前的計(jì)劃經(jīng)濟(jì)到新的市場(chǎng)經(jīng)濟(jì)的運(yùn)作模式的轉(zhuǎn)換。