Read and judge. 阅读短文，判断正误。

Welcome to Uncle Tom's Happy Farm. It is very big and beautiful. On his farm, you see many animals and vegetables. He has twenty sheep, fifteen hens and thirty pigs. Look, what's behind the tree? Ah! It's a fat cow. So you can drink milk here. Look! These are carrots and tomatoes. They are very fresh and big. Those are green beans. They are long.