如图，正方形ABCD的边长为3cm，动点P从B点出发以3cm/s的速度沿着边BC﹣CD﹣DA运动，到达A点停止运动；另一动点Q同时从B点出发，以1cm/s的速度沿着边BA向A点运动，到达A点停止运动．设P点运动时间为x（s），△BPQ的面积为y（cm²），则y关于x的函数图象是（   ）

忠言顺耳更利于行

    ①古人云：“良药苦口利于病，忠言逆耳利于行。”忠诚规劝的话听起来虽不顺耳，可对我们立身处世却是有好处的。从犯错误者来看，逆耳的忠言固然利于行，但是若从劝诫者来说，顺耳的忠言岂不更利于行吗？

    ②邹忌和伍子胥进谏，目的都是希望君主纳谏除弊，修明政治，富国强兵。他们二人进谏的都是忠言，按理说都利于行，但效果却迥然不同，原因何在？在我看来，主要在于忠言顺耳与否。邹忌用类比、暗示的方法，委婉规劝，锋芒含而不露。齐威王听起来顺耳、舒服，采纳了邹忌的意见。而刚愎自用的吴王正陶醉于胜利，沉迷于酒色，听伍子胥的逆耳忠言便觉刺耳、反感；加上奸佞进谗，伍子胥不丢命才怪！同是忠臣进忠言，却有两种不同的结局。这就证明，忠言顺耳更利于行。

    ③顺耳的忠言有时所起的作用是逆耳忠言所不能相比的。大家知道，对那些“二进宫”、“三进宫”的人来说，法律尚且不怕，逆耳的忠言恐怕是起不了什么作用的，相反还可能触发恶性事件。对于这些人，我们若能用顺耳之言去诱导他们，让他们感受到更多的温暖和爱，明白社会并未抛弃他们，也许效果会更好些。晋人周处在陆云的劝导下“遂改励，终为忠臣”，不就是证明吗？不要因为他们是犯过错误的人，便恶言相讥，甚至责骂。你虽然用心良苦，想用逆耳之言使他们改正错误，踏上新路，但要知道他们也是人，同样需要别人的________、________和________、________。你若责骂，就好比在他们受伤的心上再加把盐或又捅上一刀，他们会更加瞧不起自己，自暴自弃，破罐子破摔。

    ④对于成绩不太好的孩子来说，老师、父母也不应责怪他们。诚然，谁不希望自己的学生、孩子取得好成绩？恨铁不成钢，这种心情是可以理解的。但责骂只会使他们由害怕到厌弃，成绩会进一步下降。此时，他们需要的是安慰鼓励，逆耳之言对他们来说无异于砒霜了。

    ⑤我们的领导干部，用顺耳的忠言去教育犯错误的同志，尤为重要，不能因为你是领导，就居高临下，架起机关枪，横加扫射，以恶语伤人。每个人都有自尊心，都渴望被人尊重、理解。若是你犯了错误，你还愿听到逆耳、伤心的话吗？

鱼在水中不会碰撞暗礁是因为它有能感知水流方向的  (    )

根据题意，选择恰当的选项填入横线中。

How to become a better runner

  This is meant for runners in high school .If you want to become a better runner, then here are several things you can do.

  Connect with your team if you are new. ____ .You can ask them for advice and hang out with them outside of practice!

  If you have a workout,don’t slack off(松懈) ever.This will never improve your performance .

____ .I know some people say they do it just to stay in shape,but if you want to stay in shape you have to work for it!

  Run 6 out of  the 7 days in a week, but don’t work out on your days off. You need to relax.

____ .It dosn’t have to be as much as you would run during practice, but you should still exercise so that you don’t get out of shape.

  If you are injured, do not run. ____ . It’s common to get shin splints(小腿酸痛)， so if this happens to you ,just take a break from running. It will actually make you better once you start running.

    ____ .It allow you to form a relationship with other people like a family. If you take time to become a better runner, you will be physicaaly and mentally(精神上地) stronger.

A， It takes much of your time.

B，Running is more than a sport.

C，Running can make problems worse.

D，It is an experience that you will never forget.

E，But if you are having a long break , you should still run.

F，Remember that you are supposed to run in a running sport.

G，It helps you realize that there is more to just the sport to look forward to.