妈妈买回来8个大苹果给小丽吃，如果每天至少要吃掉3个苹果，最多可以有____ 种不同的吃法．

航天探测发现：金星是一个被浓密大气层包围的固体球，大气的成分之一是三氧化二碳（C₂O₃），实验证明它的化学性质与一氧化碳相似．下列关于三氧化二碳（C₂O₃）的说法中，不正确的是（　　）

    My name is Lily. I'm from London. This is my mother. She is an English teacher. She is good at cooking and she is nice. This is my father. He is thin(瘦的)and short. He is clever. I love them. Oh, this is my house. Is it beautiful? The famous Thames(泰晤士河) is close to my house. It is long. There are a lot of ships on the river(河). I like watching the ships.