假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。删除：把多余的词用(\)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1 每处错误及其修改均仅限一词；
2只允许修改10处，多者(从第11处起)不计分。
Noone can ever achieve some success without failure，asfailure can usually help us learning what our strengths and weaknesses are.
WhenI was in high school，mostof my teacher and schoolmates thought it better to study science than liberalarts，sayingthat it promised a good future.I tried to follow this trend despite the fact Iwas not good at physics.It was only two months later when I failed an extremeimportant physics exam that I realized my talent lied in subjects like Chinese，English as well as history.I hadswitched to liberal arts immediately.
Thefollowing years witnessed my excellent school performance.But failure is not soterrible as we have expected as long as we can learn something from them.
，则实数