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                                                                                            秋天的怀念
        双腿瘫痪后，我的脾气变的暴怒无常。望着望着天上北归的雁阵，我会突然把面前的玻璃砸碎；听着听着李谷一甜美的歌声，我会猛地把手边的东西摔向四周的墙壁。这时，母亲就悄悄地躲出去，在我看不见的地方偷偷地听着我是动静。当一切恢复沉寂，她又悄悄地进来，眼边红红的，看着我。“听说北海的花儿都开了，我推着你去走走。”她总是这么说。母亲喜欢花，可自从我的腿瘫痪后，她侍弄的那些花都死了。“不，我不去！”我狠命的捶打这两条可恨的腿，喊着：“我可活什么劲！”母亲扑过来抓住我的手，忍住哭声说：“咱娘俩在一块，好好儿活，好好儿活……” 
         可我却一直都不知道，她的病已经到了那步田地。后来妹妹告诉我，她经常肝疼得整宿翻来覆去的睡不了觉。 
        那天我又独自坐在屋里，看着窗外的树叶“刷刷啦啦”的飘落。母亲进来了，挡在窗前：“北海的菊花开了，我推你去看看吧。”她憔悴的脸上显出央求般的神色。“什么时候？”“你要是愿意，就明天？”她说。我的回答已经让她喜出望外了，。“好吧，就明天。”我说。她高兴的一会儿坐下，一会站起来：“那就赶紧准备准备。”“唉呀，烦不烦？几步路，有什么好准备的！”她也笑了，坐在我的身边，絮絮叨叨地说着：“看完菊花，咱们去‘仿膳’，你小时候最爱吃那儿的豌豆黄儿。还记得那回我带你去北海吗？你偏说那杨树花是毛毛虫，跑着，一脚踩扁一个……”她忽然不说了。对于“跑”和“踩”一类的字眼她比我还敏感。她又悄悄地出去了。 
        她出去了，就再也没回来。 
        邻居把她抬上车时，她还在大口大口地吐着鲜血。我没想到她已经病成那样。看着三轮车远去，也决没有想到那竟是永远的诀别。 
        邻居的小伙子背着我去看她的时候，她正艰难地呼吸着，像她艰难的一生。别人告诉我，她昏迷前的最后一句话是：“我那个有病的儿子和我那个还未成年的女儿……” 
        又是秋天，妹妹推着我去北海看了菊花。黄色的花淡雅，白色的花高洁，紫红色的花热烈而深沉，活泼洒洒，秋风中正开得烂漫。我懂得母亲没有说完的话，妹妹也懂。我俩在一块儿，好好儿活……

交通部门为了限制对公路的破坏，限制车辆对地面的压强不得超过7×10⁵Pa，假设每只轮胎与地面的接触面积恒为0.02m²，则一个四轮运输车对地面的压力不超过____ N．

What makes the world become smaller? Some inventions, It began in the 11th century, But it has developed greatly in the last century. Let's take a look at the five top inventions.
Movable Type(活字印刷) :By using Movable Type, books could be printed cheaply and easily. Bi Sheng invented Movable Type in China in the 11th century.
Telephone: The inventor Alexander Graham Bell made the first telephone call in 1876." Mr. Watson, come here. I want you ,"he said to his assistant(助手) over the phone line. And with those famous words, the world was about to get much smaller.
Airplane: The Wright brothers made the first powered flight in1903.Air travel has made the far way places suddenly become a lot closer.
Satellites: The Soviet Union sent up the world's first satellite in 1957. This begin the Space Age. Satellites have helped scientists study the earth. Much of our knowledge of the world has come from the information recorded by satellites.
Internet: When the Internet was created in 1969. only a few people knew about it. But more than 650 million people in the world use it now. The Internet has made information about anything easy to get.