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Dreams are often mysterious （神秘的）. （1） 　 　day，a man named Zhuang Zhou had a very interesting dream.He dreamed of becoming a beautiful butterfly.Flying （2） 　 　，he could do anything he wanted.How happy and carefree （无忧无虑的）he was!He forgot that he was a man.

Then he woke up from his dream and found he was a man.

"Who am I，indeed （到底）？ " he asked（3） 　 　.

"Am I Zhuang Zhou or the butterfly？ "

Finally，he said， "Maybe I am a butterfly.In my dream，I （4） 　 　a man and my name was Zhuang Zhou. "

Zhuang Zhou lived （5） 　 　than 2，000 years ago.We also call him Zhuang Zi.

Zhuang Zi loved nature and freedom （自由）.He thought that people and animals should （6） 　 　equally （平等地）.There are many interesting （7） 　 　about him and animals.

Once，Zhuang Zi and his friend were taking a walk （8） 　 　the river.After a while，Zhuang Zi said， "Look at the fish!How happy they are! " His friend asked him， "You are not a fish.How do you know they are happy？ " Zhuang Zi smiled， （9） 　 　you are not me.How do you know that I don't know the fish's feelings？"

Is Zhuang Zi's question a （10） 　 　 one？What do you think he was - a man or a butterfly？