文章献给准备过英语专业四级的同学，给同学一点经验，希望大家考试成功。
1. 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.
要找到涉及良多复杂身分的新现象的原因远非一件易事。例如，一些科学家把情形的恶化归结为一些自然身分，而另一些人把责任都推在人类不恰当的行为上。
2. One doesn't have to look far to realize the direct correlation between smoking and cancer.
人们不用破耗很鼎实力就能发现抽烟和癌症之间的直接联系。
3. 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.
对上升的少年自杀率的诠释涉及良多复杂的身分。有的人把上升的原因归结为过度强调少年时代的成功，有的人指出是因为不竭增添的火伴之间的压力，还有人认为是对不竭转变的社会价值的苍莽造成的。
4. 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.
反社会行为的原因既复杂又多样。我认为这种现象是不适当的脚色典型和贫窭行为规范的很好的界耸ё凫成的。然而，首要原因很可能是不竭贬低的社会价值。
5. 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.
种族仇恨的原由没有现成的谜底。然而，社会学家把原因归结为被误导的更高尚的种族的不美观念以及生成的对有色人种的不信赖。首要原因可能仅仅是因为蒙昧。