相信许多同学在学习数学的时候都会遇到这样的情况:明明这道题看着很熟悉,自己好像遇到过,当时还做错了,但偏偏就是想不起来正确的解法是什么,结果……又做错了。这说明你并没有真正的掌握这个知识点,或者说,你没有掌握得足够牢固。面对一张讲解过的试卷,你有把握自己能得满分吗?人总是能从自己的失败中学到更多的东西,所以,你需要一本错 I believe many students will encounter such a situation when they learn math: Obviously this question is very familiar, it seems like it happened, but it was still wrong at that time, but it just can not remember what the correct solution is, and as a result ... ... done wrong again. This shows that you do not really grasp the point of this knowledge, or that you have not mastered firmly enough. Do you feel confident that you can get the perfect score from an explanation paper? People always learn more from their failures, so you need a mistake