已知关于x的不等式（2a﹣b）x+a﹣5b＞0的解集为x＜ $\frac{10}{7}$，

（1）求$\frac{b}{a}$的值．

（2）求关于x的不等式ax＞b的解集．

在$△ABC$中，AB=1，BC=2，E为AC的中点 ,则$\overrightarrow{BE}·\left(\overrightarrow{BA}-\overrightarrow{BC}\right)$=（  ）

阅读下文，回答问题

父亲的肩头一片雪白

胡子宏

       ①15岁那年，我在全县数学竞赛中获得第一名后，被推荐到县城最好的实验初中读书。为此，父亲高兴得一晚上没睡着觉，千嘱咐万叮咛，希望我争一口气以后考上大学中专什么的。学校实行走读制，每天我都要骑着家里那辆老掉牙的自行车去上学，风雨无阻。

       ②条件的艰苦我不怕，可是，那所学校的同学几乎都是县城的孩子，尤其是在我那个班，有好几个县长、局长的孩子。当我穿着农家孩子的粗衣布鞋迈进教室时，顿时传来一阵哄笑声。随后就有孩子为我起了“土老帽”、“趿拉鞋”的外号。在花花绿绿、性格活泼的同学中，我特别敏感、孤独，对新环境充满了恐惧。许多次我推着破旧的自行车来到学校，就看到县长、局长家的孩子们从吉普车里下来，趾高气扬地斜视我一眼，我顿时感受到了一种难以忍受的歧视。

       ③好在我是一个特别勤奋的学生，基础又扎实，在学习上毫不吃力。半年以后，期末考试，我在班上乃至全年级都是第一名。班主任说：明天就要放寒假了，学校召开全体师生大会，每个学生要有一位家长参加大会，届时要对优秀学生颁发奖状和奖金。我兴奋不已，作为一个农村孩子，我并不比别人差。这时，我听到邻座的几位局长的孩子在嘀咕：那个“趿拉鞋”，也会考第一，“土老帽”……我悄悄地离开学校。考了第一，仅给了我片刻的兴奋，随即自卑又涌上心头。

       ④回到家里，我把成绩通知单递给父亲，父亲乐得合不拢嘴。当我告诉父亲明天要开全体师生家长大会时，父亲立刻张罗开来，叮嘱母亲翻箱倒柜找出春节时他才舍得穿的那件皮大衣。可是我说：“爹，你别去了，人家的父亲都是城里的干部……”（A）父亲的笑容一下子凝固了。我转过身，鼻子不禁又酸了起来，心想：父亲，你为什么不也是干部，你怎么偏偏当一辈子农民……

       ⑤第二天天未亮，窗外刮起了呼呼的北风，窗户的塑料纸被吹得啪啪作响，外面是一片片的雪白。我摸索着穿上衣服收拾书包。父亲说：“我送你去吧，下雪了……”我说：“你就别去了，不就开个会吗？再说，别人的家长是干部，你又不会发言……”打开屋门，一股风雪涌进屋来，好大的雪，（B）我往书包里塞进两个窝头和一块老咸菜，咬咬牙，冲进风雪之中。凉凉的天，凉凉的心：父亲，对不起您了，我是真心想让您分享我的光荣的，可是，班上就我一个乡下孩子，那么多家长，就你一个人种地的……不知过了多长时间，当学校响起预备铃时，我迈进学校的大门。雪仍纷纷扬扬地下着，几辆吉普车和轿车很显眼地停在操场上。

       ⑥铃声响过后，校长登台讲话，校长的讲话不时激起同学们和家长们的一阵阵掌声和笑声，而此时的我身上冷得厉害，肚子饿得厉害，心里孤单得厉害。我无心听校长的讲话，随意把目光投向窗外的风雪，就这么一刹那，我惊呆了……

       ⑦父亲，父亲来了！他正透过一扇玻璃向里望，仔细聆听着校长的讲话。我扬扬手臂，父亲看着我，向我使劲摆摆手。风正吹，雪正舞，父亲的肩头一片雪白……

       ⑧一阵掌声响起来，有同学使劲扯扯我的衣服，校长正叫我的名字，同时手里展开一张鲜红的奖状：我下意识地走向讲台，校长很慈祥地凝视着我。一刹那，我的泪水涌出眼帘，我手指窗外……礼堂里所有的目光都齐刷刷地投向窗外，投向我的父亲。校长一个箭步下了讲台，打开门。风雪呼啸着涌入礼堂，父亲跨进来，抖落身上的一层雪花。

       ⑨我说：这是我的——父亲！热烈的掌声响起……

       ⑩放学时，我和父亲步出礼堂，父亲说：你其实没必要自卑，别人的歧视都是暂时的。男子汉，只要勤奋，别人有的，咱们自己也会有……

How to stay in a good mood

    It's typical to feel your mood starting to become bad. If you want to be able to stay in a good mood, then you have to form these habits that will keep you feeling happy.

    ⒈Don't take love for granted.

    If you're lucky enough to have a special someone, then you should make your time together meaningful. ____Make time to spend time with your special someone. Being around your loved one has been proven to make people happier.

    ⒉Get regular exercise.

    Regular exercise is one of the most important habits that you need to form ____ You can go running three times a week and walk the other four. Just make sure to be as active as you can every day.

    ⒊Spend time with your friends.

    ____Of course, don't always hang out with friends when you have a free moment. Make sure you do make time to see friends at least once or twice a week, if you can.

    ⒋Get enough sleep.

    ____ One of the easiest ways to stay in a good mood is to be well-rested. Waking up feeling full of energy will make you feel much more ready to face the day and much more excited about everything ahead of you.

    ⒌____

    If you want to stay in a good mood, then you have to make sure that you eat three healthy and diverse meals every day. Start off with a healthy breakfast, and don't skip this meal no matter what things happen. Have light snacks throughout the day, like yogurt or fruit, to keep you energetic.

A. Have a healthy eating schedule.

B. Make sure that you sleep for 7-8 hours a day.

C. Do begin with a healthy breakfast in the morning.

D. Hanging out with friends will keep you feeling alive

E. Don't stop doing the things you love with the person you love.

F. However, you don't have to do the same boring old thing every day.

G. Once you start exercising, do the same sports at the regular time every day.