阅读材料，回答下列问题。

材料一：萧伯纳说：“你有一个苹果，我有一个苹果，我们彼此交换，每人还是一个苹果；你有一种思想，我有一种思想，我们彼此交换，每人可拥有两种思想。”

材料二：法国昆虫学家《昆虫记》的作者法布尔说：“学习这件事不在乎有没有人教你，最重要的是在于你自己有没有觉悟和恒心。”

材料三：著名数学教育家波利亚指出：“学习任何知识的最佳途径是自己去发现。因为这种发现理解最深，也最容易掌握其中的内在规律、性质和联系。”

阅读理解

    I loved my aunt Suzy. She was such a kind old lady. I loved going to her house on holiday. She had been sick for the last few years and, though my job had taken me away across the town, I tried to visit her as much as possible. I helped with the shopping, the cooking and the cleaning and taking her pet cat Mazy to the vet.

    Sad as her passing away was, what happened to Mazy was even more worrying. Because aunt Suzy had no children, there wasn't anyone who seemed to care for her beloved cat friend. I would have taken her in a short time, but my apartment doesn't allow pets. First, we talked with her neighbors. Mr. Jenkins, who was alone and lived across the street, wasn't interested. Joe and Sally who lived next door had a small child with serious skin allergies(过敏症). My aunt's best friend Molly who had lived just down the road was unable to take care of herself as she had serious health problems.

    Second, we thought about our family members. My brother Bobby and his wife Jill were eliminated at once as they aren't cat people. My cousin in California was a bit interested, but we weren't sure about the trip as Mazy was nearly as old as my aunt (in cat years!). Finally, we came to the local humane society to see whether they would be able to help her find a new home. The problem was that most people and families only welcomed a smart little cat into their home, not a dull old one.

    In the end, we had to put Mazy to sleep. I had spoken with the vet and realized it was possible for the best. It was so hard to lose aunt Suzy and then have nowhere for Mazy to live. A few months went by and I had gone to my aunt's house to clear out some of her belongings. I happened to see her mailman. Jerry and we started to talk about my aunt when he asked about Mazy. I told him that we had to put Mazy to sleep because we couldn't find a home for her. Jerry got really quiet. “I promised Suzy that if anything ever happened to her, I'd take care of Mazy”, he said sadly. “Suzy always said she'd told her lawyer the arrangement.”

    Hearing this, my heart sank to my feet and I almost cried. The saddest part, I realized, was this all could have been avoided. I guess we were just so busy in those final months that we didn't think about it. We could have called my aunt's lawyer to take care of it in less than 10 minutes. I'll never forgive myself for not thinking of it sooner. And I'll never forgive myself for losing Mazy.

解不等式组：$\left\{\begin{array}{c}-3(x+1)-(x-3)<8\\ \frac{2x+1}{3}-\frac{1-x}{2}\le 1\end{array}\right.$，并求它的整数解的和．

阅读《给美丽做道加法》，完成问题。

给美丽做道加法

        ①就像平静的湖面落下一枚银币，突然的声响，惹得满教室的花朵晃动起来。

        ②靠窗那排坐在最后的同学，弄碎了一块小镜子。

        ③这是上午的第二节课，老师的讲述已停下来，同学们正进行课堂练习。有初冬的阳光从窗外涌进来，流淌在摊开着的课本上的字里行间。男老师在教室的课桌间来回踱步，看长长短短的七排秀发及秀发下亮晶晶的112粒黑葡萄，捕捉沙沙的写字声合成的音乐，他感觉到自己好像一位农民在田间小憩，擦汗的同时聆听着序稼的拔节之声。

        ④一个小姑娘心爱的小镜子摔坏了。

        ⑤教室里低低地有了议论：

        ⑥“臭美!扮啥酷呀!”

        ⑦ “上课怎么能照镜子?”

        ⑧ “活该受批评。”

        ⑨“看老师怎么办!”

        ⑩老师没有言语，他有意无意地听着同学的每一句议论。这些女孩子呀，全十五六岁年龄，作为旅游职业高中的新生，脸蛋身材口齿当初都曾精心挑选，一笑甜爽爽的，开了口也如一巢小鸟，三五分钟是静不下来的。男老师的心里笑着，他知道她们在等讲台上的反应。

        ⑪其实，开始练习后不久，老师就看见那位同学悄悄摸出了小镜子。他看到她将镜片偷偷压在作业本下，写几笔就照一照。借着阳光，一只蝴蝶形的淡黄色的发卡舞动在她的前额，花季的脸真是漂亮。

        ⑫男老师想提醒她，但一时没有想好合适的话，现在经同学一催化，他忽然有了一种灵感。

        ⑬他微笑着先开口问了一个物理问题。

        ⑭ “请说说平面镜的作用。”

        ⑮“有反射作用。”这很简单，全班56个同学几乎异口同声地回答。

        ⑯ “是啊，”老师说，“同学们，几分钟前，我们教室里56位同学变成57朵花，有一个同学借镜子反射出一朵。但是，镜中的花是虚的，镜片只能反射美丽，并不能增加美丽。要增加美丽或者让美丽面对岁月的雨雪风霜的一笔笔减数，还是保持不变，我们惟一的办法是从另一方面给它再一笔笔添上加数。这加数是指：我们一次次做进步的努力，一次次为自己的目标不轻言放弃，或者，一次次向我们的周围伸出自己的手……而此刻，对坐在教室里的你来说，帮助你增加美丽的是你桌上的书本。”

        ⑰再也没有任何声音，一池吹皱的春水再度平静。

        ⑱当天晚自习时，照镜的小女孩在日记中写下了这么一句话——给美丽做道加法。