【正文】
Please tell me who he is: He is not my brother, and not is my sister, but he is a child of my parents. Jack: I don’t know. Tomson: Haha, it’s very easy. It’s me. 快速判斷: 1. Tomson has a riddle. ( ) 2. Jack understand the difficult. ( ) 3. This riddle is very difficult. ( ) 4. Jack can’t answer Tomson’s question. ( )