根据短文内容，判断正（T）误（F）。 I have always heard that walking under a ladder brings bad luck, but I've never thought so. I have walked under la dders many times, but I have never met anything bad before. It's the same with black cats. People say if a black cat crosses before you, it means bad luck. I have never thought that until this afternoon. But ever since I heard my student Sam's story, I've begun thinking about whether it was true. This afternoon, Sam was walking down the street thinking about something, so he wasn't paying attention to (注意到) where he was going. He walked right under a ladder standing against (倚着) a building. A black cat ran out of a door just at that moment, and Sam fell over it. His head hit the ladder. A man washing the window was at the top of that ladder and the dirty water went down through the air. Poor Sam! He got wet all over. (     )1. At first, the writer believed that walking under a ladder would bring bad luck. (     )2. A black cat crossing will bring you good luck when you are walking. (     )3. That afternoon, the writer's son Sam was walking down the street thinking about something. (     )4. There was a man washing the window near the door. (     )5. Sam had bad luck that afternoon.