5. The “ice crystals” in the fourth paragraph refers to “_______”.

A. water drops      B. rain drops

C. flowers       D. snowflakes

                             E

   I’m very interested in mini racing cars and I can keep working on them. After each race I find out why my car  1  , and then work to make it better. My friends and I often have races. We see whose racing car travels the  2  .

   Today is the final race between my  3  and I. A few days ago, our cars both went the same distance(距离). Yesterday, I carefully made some changes in my car. I believe these changes will make it go faster.

   The race began. My car was fast. It was far  4  . I wanted to  5  , but didn’t. I know those who laugh last laugh loudest. Things changed very fast. My friend’s car started going faster. It  6  caught up with mine. To make things worse, my car started slowing down. My friend’s car went past mine. Mine kept going,  7  it was far behind. Suddenly, my friend’s car went off the road. My friend had to stop and fix it  8  .“Thank God,” I said. I was so happy to have a chance to catch up. Soon my

friend’s car was OK. But it had to start from  9  it stopped. That was a few meters away! My friend’s car went very fast, as fast as three meters a second! It was close to mine again. Just then it started to rain. The road became wet. Well, that wasn’t a  10  for my car at all.

   At last, I won.

Choose the words or phrases and complete the passage.

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