选择题作为一种命题形式,在各类考试中一直延续,特别是中考命题者为更好地考查学生对所学知识掌握程度和基本技能.四个选择中除正确的以外,其余的三个选择支并非为设计选择题型而信手拈来,而是考虑到学生在解题过程中可能因思维缺乏科学性、严谨性,或估计在学生学习过程中可能存在某种知识缺漏或某种数学能力的缺陷最容易出现的某些错误,而精心布设的迷惑性极强的干扰,把正确的答案更好地隐藏起来,使学生在解题过程中既使犯错,也能与所给选择对上号,从 Multiple choice questions as a form of proposition, in all kinds of exams has been extended, especially in the senior high school entrance examination subjects in order to better test the degree and basic skills of students knowledge of the four options except the right, the remaining three The choice of the branch is not designed to choose the type of questions come in handy, but taking into account the students in the process of problem solving may be due to lack of scientific scientific rigor, or estimated in the process of learning may exist some kind of knowledge gap or a mathematical ability Defects are the most prone to some mistakes, and carefully laid out the confusing extremely strong interference, the correct answer to better hide, so that students make mistakes in the process of solving problems, but also with the choice of the right number ,From