题干

如图所示,水平转台上放着一枚硬币,当转台匀速转动时,硬币没有滑动,关于这种情况下硬币的受力情况,下列说法正确的是:(   )

A:受重力和台面的持力

B:受重力、台面的支持力和向心力

C:受重力、台面的支持力、向心力和静摩擦力

D:受重力、台面的支持力和静摩擦力

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D

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    Yesterday was Father's Day. Many things happening between my father and me crowded my mind. But one thing made a deep impression on me.

    It was a Sunday morning, and I was in a 1 mood (情绪). Two of my friends had gone to the movies the night before and hadn't invited me.I was in my room2ways to make them sorry when my father came in. “ Want to go for a ride today,Berk? It's a beautiful day.”

    “No! Leave me alone!”Those were the 3words I said to him that morning.

    My friends called and 4 me to go to the mall with them a few hours later. I forgot to be5with them and then went with them.When I came home,I found a6 on the table.My mother put it where I would be sure to see it. “ Dad has had an 7 Please meet us at Highland Park Hospital.”

    When I reached the hospital ,my mother came out and told me a car hit my father and his injuries were extensive(大曲积的). “Your father told the driver to leave8 alone and just call 911, thank God! If he had moved Daddy, ….”

    My mother may have said more,but I didn't hear. I didn't hear anything 9 those terrible words: Leave me alone. My dad said them in order to10 himself. He didn't want to be hurt more. How much had I hurt him 11 I shouted out those words at him earlier in the day?

    It was several days later that he was12 able to have a talk.I held his hand gently, afraid of hurting him.

    “ Daddy... I am so sorry...''

    “It's okay, sweetheart. I'll be okay.”

     “No,” I said, “I mean about13 I said to you that day.You know, that morning?"

    He looked at me and said, “Sweetheart, I remember14 about that day, not before, during or after the accident. I remember telling you goodnight the night before,though." He managed a weak smile.

    My English teacher once told me that words have great power. They can hurt or they can heal(治愈).And we all have the power to 15 our words.I am going to do that very carefully from now on.