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剃头

周海亮

    ①春节前，下了大雪。我和满仓缩在屋角，有一搭没一搭地闲聊。

    ②我说，满仓回家过年吗？满仓抱一本没头没尾的书边看边说，国外有个人，竟拿菜刀给自己做了阑尾炎手术。我说，满仓，我问你过年回不回家？满仓说，这家伙还没打麻药，只是嘴里咬一根雪茄。我说，满仓！满仓抬起头。额前的抬头纹张牙舞爪。我说，你过年回不回家？满仓好奇地盯着我，回家？这模样能回家？我说，这模样怎么不能回家？

    ③那天正好是年三十，我说，满仓咱俩还出去吗？满仓说，不出去了。我说，明天呢？满仓想了想，他说，明天再说。

    ④我们掏出所有的钱，满仓算了算，说，有酒有肉，挺丰富。我揣着钱往外走，却被满仓喊住。他说你买了酒菜早点回来，给我剃个头。我说，这是理发店的事吧？满仓说，我还有钱去理发店吗？我说，可是我不会剃啊，在农村我连羊毛都没剪过。满仓说，很简单，横平竖直就行了。我说，我怕手一哆嗦，连你的脑袋都剃下来。满仓说，你可真啰嗦。快去快回，给我剃头！

    ⑤我没有快去快回。我把钱分成三份。一份买了几瓶白酒，一份买了一些酒菜，一份买了半只烧鸡。回去的时候，天已擦黑，街上响起稀稀落落的鞭炮声。我提着两个方便袋，推开门，就看到一只怪物。

    ⑥怪物长着满仓的样子，脑袋像一个足球，像一只绿毛龟，像一堆牛粪团，像被剥皮的土豆，像被摔烂的茄子或冬瓜。怪物手持一把锈迹斑斑的剪刀，剪刀上至少粘了两处头皮。

    ⑦屋子里只挂了一只十五瓦的灯泡。仅靠这点微弱光芒，我想即使削不掉他的脑袋，至少也能削下他半斤瘦肉。

    ⑧满仓一手操剪刀，一手举一块碎玻璃，仔细并笨拙地给自己剃头。那块当成镜子的玻璃片好像毫无用处，因为他不断把剪刀捅上自己的头皮。他剪几剪子，转头问我，怎么样？我说，左边长了。他就剪左边，呲牙咧嘴，痛苦不堪。过一会儿，再问我，这回怎么样？我说，好像右边又长了。他就再剪右边，咬牙切齿，碎发纷飞。我说别剪了满仓，你快成葫芦瓢了。满仓顽固地说，必须剪完！

    ⑨很晚了，我和满仓才开始吃年夜饭。我们开着那台捡来的黑白电视机，可是屏幕上雪花飞舞，根本看不清任何影像。满仓骂一声娘。他的脑袋不停地晃。那上面，伤痕累累。

    ⑩酒喝到兴头上，满仓非要和我划拳。他总是输，就不停地喝。后来他喝高了，偶尔赢一把，也喝。满仓低着头，一边展示他的劳动成果一边说，你说我和那个割自己阑尾炎的巴西人，谁厉害？

    我站起来，握起拳头猛砸那台可恶的黑白电视机。我说，你厉害，因为你还得考虑美观。可是我搞不懂，你为什么非要在今天剃头呢？满仓听了我的话，抬头看我。那是电视机正好显出影像，我看到赵忠祥手持麦克风恋恋不舍地说，明年除夕，我们再见。

    满仓向赵忠祥挥挥手。他低着声音说，记得小时候，家里穷，过年时，没好吃的，也没好穿的，爹领我去剃个头，就算过年了。说话时，38岁的满仓就坐在我对面，可是他的声音似乎飘到很远。飘到很远的声音遇到腾空而起的烟花，被炸得粉碎。

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阅读理解

    A ground-based system that uses much stronger signals than GPS can find your location in cities and indoors. It is a new positioning system that could compete with GPS to make sure you never lose your directions again.

    Instead of satellites, Locata uses ground-based equipment to send a radio signal over a localized area that is a million times stronger on arrival than GPS. It can work indoors as well as outdoors, and the makers claim that the receivers can be shrunk(缩小) to fit inside a regular cell phone. Even the US armies, which invented GPS technology, signed a file last month agreeing to a test of Locata at the White Sands Missile Range in New Mexico.

    “This is one of the most important technology developments for the future of the positioning industry,” says Nunzio Gambale, CEO and co-founder of the firm Locata, based in Griffith, Australia.

    As for the Locata's correctness, Christopher Morin of the US Air Force tested it recently at White Sands, and it worked to within 18cm along any axis(轴). Morin said it should be possible to get the exactitude down to 5cm.

    The tests were performed in an open desert where GPS also worked beautifully, but its signal was weak—like a car headlight from 20,000 kilometers away—and easily cut off by solid objects(实心的物体). Locata's signal was far stronger, though not guaranteed to work in a complex urban environment, said David, speaker of the UK' s General Lighthouse Authorities.

    Locata's technology will face competition in the race to transform indoor navigation. But it could shine in specific areas, Gambale said. Robots with Locata could easily navigate inside buildings without the complex optical(视觉的) systems they need at the moment. And the process that handles correct location data could not only guide you around a mall, railway station or airport, but also take you to the exact shelf in a shop for the product you want. It would be small and cheap enough for smart phones and it should be available within five years—a similar path to the one GPS took on its way towards the world, he said.