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有些习题由于限制条件较少,或题设情景具有某种普遍性,从而出现多个答案或多组答案,这类题,有人称之为“一题多‘解’”。为了避免与含意为一道题有多种解法的“一题多解”相混淆,我在此称之为多答案题。纵览各种习题汇编,多答案题并不难觅,这些题有的是编题者精心设计的,但也有的却是编题者未曾料到的。窃以为深入研究这些多答案题对发散思维能力的训练具有重要作用。下面浅析(评)几道多答案题。例1 短周期元素X、Y,X的原子序数小于Y的原
Some of the exercises are limited in terms of restrictions, or the scenario has a certain universality, so that there are multiple answers or sets of answers. Such questions are called “more than one solution”. In order to avoid being confused with the “multiple solutions” of a problem with multiple solutions, I call it a multiple-answer question here. Overview of a variety of exercise sets, multi-answer questions are not difficult to find, these questions are edited by the meticulous design, but also some editors did not expect. It is believed that the in-depth study of these multiple-answer questions plays an important role in the training of divergent thinking skills. The following analysis (review) several multi-answer questions. Example 1 The atomic number of short-cycle elements X, Y, X is less than that of Y