假定英语课上老师要求同桌之间交换修改作文文,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。每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(A),并在其下面写出该加的词。
删除:把多余的词用斜线()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1处起)不计分。
When I was young, I was terribly poor in the Chinese. Be afraid of expressing myself was one of the reasons why I rarely did well in school. Once I failed in a mid-term exam. When I got the papers, I realized things could have been better if I listened to the teacher much more attentive. So I turned to my teacher for helps and he told me, “Where there is a will, there is a way. If you are devoted to learn Chinese, you'll make it.” I couldn't agree much. From then on, I began to work harder. Out of my expect, I made great progress soon. Today, Chinese is which my strength lies. And I'm grateful for my Chinese teacher.
，|q|=3，p、q的
夹角为45°，则以a=5p+2q，b=p－3q为邻边的平行四边形过a、b起点的对角线长为 （ ）