一些智力竞赛题中常有这样一道题：1吨铁和一吨木头，哪一个重些？有人不加思索就回答一吨铁重些，但再一想，就说一样重。甚至有些人这样想，这么简单的一道题出题人一定设了圈套，于脆反其道而行之，说一吨木头重些．到底谁重谁轻，人们常争论不休．问题在于此题出得很不严密 There are often such questions in some quiz questions: One ton of iron and one ton of wood, which one is heavier? Someone answered a ton of iron without thinking. But once again, he said it was as heavy. Some people even think this way, such a simple question title must set up a trap, in the opposite of brittle, said that a ton of wood is heavier. In the end, whoever weighs, people often argue. The problem is very rigorous