21. Perhaps it is time to reexamine the idea that college degrees are a guarantee of intelligence .也许现在是应该重新考虑大学为是智力的保证这种想法的时候了。

22. A growing number of people are beginning to realize that wealth is not the sole prerequisite for happiness .越来越多的人开始意识到财富不是幸福的惟一先决条件。

23. In spite of the extraordinary progress made in science and technology , problems remain in terms of guaranteeing that achievements benefit the greatest number of people .尽管科学技术取得了非凡的进步，但是在保证进步成果使尽可能多的人受益这方面还存在一些问题。

24. A famous thinker once wrote that " the greatest threat to mankind is mankind itself ! " If this is indeed the case , then the current situation should make us ponder our futuer existence .一位著名的思想家曾经写道：“对人类最大的威胁是人类自身！”如果事实确实如此，那么，现状应该促使我们对我们未来的生存进行思索了。

25. U.S. President Harry Truman once remarked : " The buck stops here ! " His view has been confirmed by numerous world leaders who have assumed full responsibility for their actions .美国总统杜鲁门曾经说过：“责任止于此！”(意为勿再把责任往别处推，这是杜鲁门办公室桌上的座右铭)他的观点得到了很多对自己的行动承担完全责任的世界领袖的肯定。