历史小组的同学以“中央集权制度”为主题进行研究性学习。下图是他们正在编制《秦朝行政机构示意图》，请按图意给空白处选择正确的内容（    ）

完形填空。

    Tom and his father are 1 in the playground. There is a cat and a dog there.  They are playing with a ball together. “I think the cat is 2 than the dog," Tom says, “I don't think so," his father says. “Why?"  “Because the dog looks 3 than the cat " Tom laughs and says, "But I like the cat.  It is white and it is 4 than the dog. " Tom's father says, “Dogs are my favourite animals because they are very 5 to me " "Yes, but I like smaller ones. Can we keep one?" Tom says. "of course," Tom's father says.

关于声现象下列说法错误的是（    ）