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《绿鸡蛋和火腿》的创作源于苏斯博士和一位朋友打赌，能否用五十个单词写成一个故事。于是便有了这本脍炙人口的书。故事是容易引起孩子共鸣的熟悉话题——要不要尝试新食物。故事情节发展激烈，一个拼命劝，一个玩命躲，最后的结局出人意料。苏斯博士的语言是节奏感很强的韵文，朗朗上口，书中所用词汇很少，而且句子结构大量重复，只置换少量单词，孩子一旦记住了第一句，后边的句子很容易读出来，让孩子颇有成就感。
A taste of home sends Sam on a mission to find his mom, with Guy and E.B. in tow. But a plot twist takes their story in a wildly different direction.
The friends hear the histories of Yookia and Zookia. Sam's desperate to connect with Pam, but a suspicious Guy doesn't trust her.
Sam shadows Pam on a super-secret spy mission, even though she'd rather work alone. In tech-loving Zookia, Guy finds an inventor's paradise.
Pam and Sam team up for an undercover job. A scampering squail leads E.B. to the top of the border wall, where she makes a mysterious new friend.
E.B. runs away to spend the day with Looka. Everything's perfect - until a hidden relic reveals the truth about the history of the wall.
Sam and his mom track the Moo-Lacka-Moo to a tropical island crawling with surprises. Guy gets Michellee's message and can't believe his eyes.
A well-meaning Guy saves E.B. from danger and shares his doubts about Pam with Sam - but it only seems to push them both further away from him.
So who gets the Moo-Lacka-Moo? With the fate of Yookia and Zookia hanging in the balance, the friends must decide where their loyalties lie.
Pam is forced to pick sides as the Zooks and Yooks prepare for an all-out war. A quick-thinking Michellee is Guy's secret weapon.
Butter side up, butter side down: The great butter battle is brewing! Can our heroes work together to stop it in time?
