Dave likes swimming in a small river near his house. But then his parents go to work in a big city and Dave has to go with his family. Their new house has a garden, but the garden is very small.Dave is not very happy.
"Is there a river near our house?"he asks his father on the first morning."No, there isn't. But there is a big park near here. And there is a pool in it. We are going there this afternoon,"says his father. Dave is very happy.
Dave and his father go to the park in the afternoon. Dave wants to walk near the pool. But he sees a sign(标识). His father reads it to him,"Warning(警告): This pool is dangerous.365 people fell into it."Dave looks into the pool carefully, and then he says,"I can't see them."