B

    A young woman in her 20s was sitting on the train, next to her mother. They both looked tired 1 excited.

    The young woman was looking out from the train's window. Suddenly, she shouted: "Mom,look, the trees are behind us!" Her voice was so 2that everyone on the train heard.

    Mom smiled. But a young couple sitting nearby looked at the young woman's childish behavior (行为 ) with pity. "Poor young woman. There must be something wrong with her3," they thought.

    A while later, the young woman4again: "Mom, look! The clouds are running with us!"

    Mom smiled again. And she seemed very happy with the young woman's words.

    5, the couple couldn't help asking the old woman: "Sorry if we offend (目犯) you. But why don't you take your daughter to a good doctor?"

    The old woman smiled and said: "Actually（其实）, we have just come from the6."

    "Then you should go to a better one. Because it seems that your daughter's situation hasn't 7," said one ofthem. They felt so bad for the old woman.

    "No, in fact I'm very happy with the treatment," said the mother. "My daughter was8from birth. Today, she is seeing the world for the first time."

    Every single person has a story. Don't judge people before you truly know them. The truth might9you.