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选择题是近年来颇为流行的一种题型。它对考查学生知识的全面掌握和熟练程度是一种很好的形式。学习任何一门东西,能够解一些难题固然不错,但最重要的是要能熟练地掌握和应用基本知识。因此,速度是选择题的一个重要要求。美国一年一度的中学数学奥林匹克竞赛,90分钟要求做30题,平均每题只有3分钟。但目前许多学生没有抓住选择题的特点,把选择题当作综合题做,从而常常不能在规定时间做完所有题目。解选择题怎样才能做到既准确而又快速?我以为可以借助下列方法。
Multiple choice is quite popular in recent years a type of question. It is a good form of overall mastery and proficiency in examining students’ knowledge. Learning any one thing, to solve some problems is good, but the most important thing is to be able to master and apply the basic knowledge. Therefore, speed is an important requirement for multiple choice questions. The annual high school mathematics Olympiad in the United States requires 30 questions in 90 minutes, with an average of only 3 minutes per question. However, at present, many students fail to grasp the characteristics of multiple-choice questions and make multiple-choice questions as comprehensive questions, so that they often can not finish all the questions by the stipulated time. How to solve multiple-choice questions can be both accurate and fast? I think we can use the following methods.