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“五一”假期中,小明一家驾车外出旅游,车的总质量是1.6t,车轮与地面接触的总面积是0.08m2,当车停在水平路面上时,车对地面的压强是____Pa;当车在高速路上行驶时,根据车距确认标志牌,小明测出车通过200m距离所用的时间是8s,则车的行驶速度是____km/h.(g取10N/kg)
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2×105,90

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    One day when I was 13, my family was working in the fields to clear away old brush when somehow the electric fence sparked(冒火星) and1a fire. We didn't see the fire2it had blocked the way to the only gate. I3to jump over the fence to safety but the fire was all around us. I could only watch in4as the flames continued to rise. Little did I know that my father had once been a(an)5and knew what to do.6with only a pump sprayer, buckets, and his boots, he7down to the nearby pond, filled the buckets and the sprayer, and began spraying the8while my older brother threw water with the buckets. Soon the wind9 however, and with the Fire Department too far away to arrive in time, my father began to stomp(踩灭) out the flames as he moved to the10 so that my family was able to move inch by inch toward the gate.11he arrived at the gate, he jumped into the truck, rolled up the windows, and drove12the fire. Then the fire was put out, and my mother was looking at my father with her13eyes.

    After that, my father began telling us about his days as a firelighter, and my brother and I became14 asking him what other jobs he had done before he15 Well, it turned out that he had done just about16except brain surgery!

    He had been in the military as a carpenter, carpet layer, and electrician, and had built B2 bombers before being poisoned in an accident that had17him to retire. My father has a blood disorder as a result of that18 but that hasn't stopped him from being a full-time electrician.

    To all those people whose fathers have worked in the military and in other dangerous jobs, be19of them, and remember that some day their20might save your life.