This summer I will leave the junior high school where I have been for three years. I am generally considered to be a careful and polite boy now. However, five years ago, I was a little bit bossy(专横的). I often fought with other boys and sometimes I even fought with my elder sister. When I saw Superman on TV for the first time, I dreamed of being a superman one day.
One P.E. class, I called up all of my friends to get together in our classroom. “Can anybody jump out of the window?” I asked them. After hearing this, all my friends kept silent. “I know you are all chickens,” I said. “Can you?” one of my friends asked me. “Sure!” I answered. “If I do it, I will get all the toys that you have. If I fail, you will get all of my toys, OK?” They said, “OK!”
Then I went up to the window of the second floor. I took a deep breath and then jumped down, stretching out my arms just like Superman. Then I hit the ground.
When I opened my eyes, I found myself lying in the hospital. I was taken to the hospital because my arms were badly hurt. Later, I heard that my P.E. teacher nearly lost his job for this, but I never received the serious punishment I feared.
的两种微粒，下列叙述正确的是( )
