【答案解析】[参考范文]

Now, a popular trend of on-job people returning to universities has aroused people"s concerns. Some return to school with an aim to shelter from pressures, while others desire for self-improvement. From my perspective, I firmly agree with the latter.
Firstly, people should return to universities to gain special skills that are more career-oriented. Having been working over a span of years, they know better which capacities and professional skills they are deficient in. What"s more, they may return to get the diploma and advanced knowledge that will contribute to pay rise, promotion, new employment or career hopping. Additionally, they can make acquaintance with more elites. Students with perceptive insight can exchange views and optimize their resources available.
While those who return to universities to shelter from burden should face reality for reasons below. First, it is a waste of time and money to wander in campus without concrete goals. If they devote to their jobs, they would gain greater achievements and profits. Moreover, they are likely to miss opportunities of promotion or work training. In addition, since they will be confronted with pressures again in the near future, it is useless and even risky to consider the university as an ivory tower.
In view of the discussion above, on-job people should return to universities for self-improvement rather than for shelter. [解析] 本题是一个观点选择型题目。论证观点时不必局限于一种思路，为避免偏激和跑题，可采用正反面例证，这样更有说服力。结论部分要重申观点。