题干

小苏和小林在如图1所示的跑道上进行4×50米折返跑.在整个过程中,跑步者距起跑线的距离y(单位:m)与跑步时间t(单位:s)的对应关系如图2所示.下列叙述正确的是(   )

A:两人从起跑线同时出发,同时到达终点

B:小苏跑全程的平均速度大于小林跑全程的平均速度

C:小苏前15s跑过的路程大于小林前15s跑过的路程

D:小林在跑最后100m的过程中,与小苏相遇2次

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答案(点此获取答案解析)

D

同类题5

    Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 AM. When I arrived there, I walked to the door and knocked, “Just a minute,” answered a weak, elderly voice.
    After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a small suitcase. When we got into the taxi, she gave me an address, and then asked, “Could you drive through downtown?”
    “It's not the shortest way,” I answered quickly.
    “Oh, I'm in no hurry,” she said. “I'm on my way to a hospice(临终医院). I don't have any family left. The doctor says I don't have very long.”
I quietly reached over and shut off the meter(计价器).
     For the next two hours, we drove through the city. She showed me the building where she had once worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where she had gone dancing as a girl.
    Sometimes she'd ask me to slow down in front of a special building and would sit staring into the darkness, saying nothing. In the early morning, she suddenly said,” I'm tired. Let's go now.”
    We drove in silence to the address she had given me.
    “How much do I pay you?” she asked.
    “Nothing.” I said.
    “You have to make a living,” she answered. “Oh, there are other passengers,”I answered.
     Almost without thinking, I gave her a hug(拥抱). She held on me and said, “You gave an old woman a little moment of joy.”