题干

 如图所示,在探究“凸透镜成像规律”的实验中,依次将点燃的蜡烛、凸透镜、光屏放在光具座上,调节烛焰、凸透镜、光屏的中心大致在同一高度.

如表是小华同学实验时记录的几组数据:

实验次数

物距u/cm

像距v/cm

1

30

15

2

20

20

3

15

30

4

5

/

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同类题3

根据短文内容,选择适当的单词或短语填空, 使短文意思完整, 每个选项使用一次。

A. show me the building,    B. was rising ,   C. make a living,   D. could hardly sleep   E. took my taxi  F. pay you  
G. drive through downtown,      H. don't have any family left

    Twenty years ago, I drove a taxi for a living. One time in the middle of the night, an old lady in her 80s ____ . She gave me an address, and then asked, “Could you ____?”

    “It's not the shortest way,” I answered quietly .

    “Oh, I don't mind,” she said. “I'm in no hurry. I'm on my way to a hospice(临终医院). I ____ The doctor says I don't have very long.”

   I quickly reached over and shut off the meter(计价器). For the next two hours, we drove through the city. She____where she had once worked, the neighborhood where she had lived, the place where she danced as a girl. As sun ____, we got to the hospice.

    “How much should I ____?” she asked, reaching into her purse.

    “Nothing ” I said.

    “You have to____ ” she answered.

    “Oh, there are other passengers,” I answered.

    “You gave an old woman some moment of happiness”. She said: “Thank you.”

    I drove into the fine morning light. Behind me, a door shut. It was the sound of closing of a life. I drove aimlessly, lost in thought.  For the rest of the day, I ____. What if that woman had got an unfriendly drive, or one who was impatient to his shift? What if I had refused to take the run?