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根据短文判断正(T)误(F)
A boy named Jack lived in a small village. One morning, his mother sent him to his uncle's in town. He had a very good time there. Before Jack left in the evening, his uncle gave him a jar and said, “There is some candy in it, you may put your hand into it and take some when you want to eat something.” Jack looked at the jar when he was in the train. It had a long and small neck. He put his hand into the jar and took five pieces. But he could not get his hand out. He turned his hand this way and that way, still he could not get his hand out. He turned his hand again. Finally he let go of four pieces. Then he could pull his hand out of the jar.
One day Jack's mother sent him to his mother's brother's house.
The jar with some candy in it had a large neck.
Jack only stayed in town for a whole day.
At last Jack only took one piece of candy at a time.
From this lesson, Jack knew that he himself was too foolish.