如图，矩形ABCD中，AB=1，BC=2，点P从点B出发，沿B→C→D向终点D匀速运动，设点P走过的路程为x，△ABP的面积为S，能正确反映S与x之间函数关系的图象是（   ）

有人说“得不到友情的人将是终身可怜的孤独者，没有友情的社会，只是一片繁华的沙漠”，这句话说明（  ） 

    Most people like bikes. Perhaps you ride a bike to school. Riding a bike can be great of fun.Do you know how to ride a bike safely?

    Careful boys and girls learn to ride their bikes well before they go out on the road.How can you tell whether you are a good rider?

    If you can ride a bike in a straight line,you can ride well .If you can't ,you should practice riding a in a safe place.

    To be safe on a bike, you need to use both hands and both feet. Keep your feet on the pedals(脚蹬)and your hands on the handle bars.

    You know that your bike is only for one person. It's not safe to carry anyone with you. Keep yourself safe when you ride on a bike.Watch where you are going all times.

阅读《她是我的朋友》片段，然后回答问题。

      过了一会儿，他突然啜泣了一下，全身颤抖并迅速用另一只手捂住脸。“疼吗，阮恒？”医生问道。阮恒摇摇头。但过了一会儿，他又开始呜咽并再一次试图用手掩盖他的痛苦。医生又问是不是针刺疼了他，他又摇了摇头。接着，他那不时的啜泣变成持续不断的低声哭泣。他眼睛紧闭着，用牙咬着自己的小拳头，想竭力制止抽泣。

     医生问他为什么这样哭，然后用轻柔的声音安慰他。男孩立刻停止了哭泣，好像刚才什么事也没有发生过一样。