完形填空
    Is it difficult for you to get up in the morning? Do you sometimes oversleep? Do you often1late? Yes? Then Hiroyuki Sugiyama of Japan invented a 2bed for you. His bed will wake you up! Here is3it works.
    There is an alarm clock and a recorder（录音机） in the bed. When the clock 4a sound, you’ll have a few minutes to wake up. Then the recorder plays light music with a little girls’5 voice. She says quietly, “Wake up, my dear.” A few 6 later, a second recording plays. It can be unpleasant sounds, “Wake up,7you’ll be late!”
    If you don’t get up after the8recording, you’ll be sorry. There is a mechanical (机械的) “9” in the bed. It can kick（踢） you in the head. Then the bed10for a few more minutes. What? You’re 11lying in bed! Slowly the top of the bed goes 12. The end of the bed goes lower and lower. 13 the bed is straight. You slide off(滑下)the bed and fall onto the14 . You are 15the bed and awake.

一块磁铁从高处掉到地上，虽然没有断，但磁性变弱了，这是因为

阅读甲乙两段文言文，按要求答题。

【甲】

    公将战，曹刿请见。其乡人曰：“肉食者谋之，又何间焉。”刿曰：“肉食者鄙，未能远谋。”乃入见。问：“何以战？”公曰：“衣食所安，弗敢专也，必以分人。”对曰：“小惠未徧，民弗从也。”公曰：“牺牲玉帛，弗敢加也，必以信。”对曰：“小信未孚，神弗福也。”公曰：“小大之狱，虽不能察，必以情。”对曰：“忠之属也，可以一战。战则请从。”

（节选自《左传•曹刿论战》）

【乙】

    孙子度其行，暮当至马陵。马陵道狭，而旁多阻隘，可伏兵，乃斫大树白^①而书之曰：“庞涓死于此树之下”。于是令齐军善射者万弩夹道而伏，期曰：“暮见火举而俱发。”庞涓果夜至斫木下，见白书，乃钻火烛^②之。读其书未毕，齐军万弩俱发，魏军大乱相失。庞涓自知智穷兵败，乃自刭，曰：“遂成竖子之名！”齐因乘胜尽破其军，虏魏太子申以归。孙膑以此名显天下，世传其兵法。

（节选自《史记•孙子吴起列传》）

【注】①白：使……露出白木。②烛：照亮。