最近,我区对五年级数学进行了一次调研检测,其中有这样一道试题:填空2时45分=()时。阅卷后随即抽查了60份试卷,该题做错的有41人次,错误率高达68.3%,其中答案为“2时45分=2.45时”的有36人次,占被抽查试卷的60%。针对这么高的错误率,我召开了一个小型教师座谈会,老师们都说这类题目不仅讲过,而且还练习过多次。为什么讲过又多次练过此类题目,竟然还会出现如此之高的错误率呢?老师们普遍认为,主要原因是 Recently, my district conducted a fifth-grade mathematics research test, which has such a question: fill in the time 2:45 = () time. A total of 60 papers were randomly selected after examining the exams. There were 41 mistakes, with an error rate as high as 68.3%, of which 36 were answered at 2:45 = 2.45, accounting for 60% . For such a high error rate, I held a small teacher forum, the teachers said that such topics not only talked about, but also practice many times. Why do you ever talk about these topics again and again, even with such a high error rate? Teachers generally believe that the main reason is