演绎深化的策略与解题策略是思路相反的两个过程,正如德国著名命题专家Engle教授所说:设想你遇到一个困难问题,你应当把它变成一个容易的问题,先解这个问题,进而得到那个难题的答案.命题通常遵循着相反的路线,从一个容易的问题开始,把它转化为一个较难的问题,把这个问题交给那些解题 Deepening strategy and problem solving strategies are two processes in which the thinking is opposite. As Professor Engle, a famous proposition expert from Germany, puts it: Imagine you have a difficult problem. You should turn it into an easy problem and solve it first. And then get the answer to that difficult problem. Propositions usually follow the opposite line, start with an easy problem, turn it into a more difficult problem, give this problem to those who solve the problem