At the lake, we saw all kinds of stones. At this time, Brother Long said, "Let's play a game of throwing water away!" "Well," we said with one voice, "let's start now! "Longge picked up a round stone, my cousin picked up a rough stone, I picked up a smooth stone, and my cousin picked up a flat stone. It will start soon, and everyone wants to show their strength. Brother Long said uncertainly, "The farther you throw it, the more spoons you hit. Round stones like balls are easy to take and can be thrown far away. " My cousin said positively, "A round stone without a water chestnut is certainly good, but a rough stone won't slip in your hand, it's easier to throw, and you can jump several times." I said confidently, "when I was scooping water, the stone slipped over the water, and the smooth stone had almost no resistance!" "My cousin said with a smile," A flat stone can easily pass through the water. As long as you throw it against the water, the stone will jump forward and hit Shui Piao. " But everyone's stone is different, and everyone seems to win. It remains to be seen who will win the first prize in the end. The game started, the boulder sank, the rough stone sank, and the smooth stone sank. But this thin and flat stone jumped on the lake several times before sinking. Why? We all cast puzzled glances at our cousins. My cousin said, "Have you ever seen water skiing? The skateboard is bolted behind the motorboat and flies forward. Have you ever played splashing while swimming? Tap the water with your palm, and the spray will fly far away. Throw a flat stone close to the water and it will fly far away by leaps and bounds. Therefore, stone chips can easily hit Shui Piao. You can easily hit Shui Piao with shells at the seaside.