一、思维障碍的出现1.背景和现状、研究的意义近几年来,随着高校扩招,初中毕业生升入高中的比例越来越高,导致进入中专的学生文化素质明显在下降。以前,只有进入高中才能够圆大学梦,但随着社会的发展,中专生也能够通过高校单独招生进入大学。而在历年的单招考试中,数学起着至关 First, the emergence of thinking obstacles 1. Background and status quo, the significance of research In recent years, with the expansion of higher education, junior high school graduates into higher and higher proportion of students, leading to the secondary school students’ cultural quality is obviously declining. In the past, it was only when entering high school that a college dream could be completed. However, with the development of the society, secondary school students can also enroll in universities through separate enrollments in colleges and universities. In the calendar year of single-strokes exam, math plays a crucial role