内容介绍：Unit 1 Hello!LESSON1FloraRobertHello Flora! Hello Robert!DanHi, Dan! Good dog!Kim Hi, Kim!Dan! Kim! A ball!Oh, no! A cat!Yes! A fish!No cat! No ball!A cat A fish A dog A ball 狗球猫鱼狗猫鱼 球根据汉语说出英 语单词.Hell