As Amy walked home from school one afternoon, she saw images of symmetry (对称) all around her: in the faces of people, in the buildings she passed, and in the cars that went by. Even the autumn leaves that covered the sidewalk. A butterfly landed on a branch above her, and Amy suddenly stopped. She held her breath and smiled, watching as it opened and closed its perfectly symmetrical wings.
All that month, Amy’s class had been studying different forms of symmetry, and Amy was deeply attracted. They’d observed the mirror symmetry of violins and the rotational symmetry of starfish. They’d even studied symmetry using a microscope and recorded the beauty with a phone camera. Now Mr. Garcia, their science teacher, had given them their final assignment: to find the most beautiful example of symmetry and give a report to the class on it.
“The most beautiful example of symmetry. What on earth could that be?” Amy asked herself. She finally decided to use her microscope to find one. Amy spent hours in the garden on the examination of cells, pieces of rock, and drops of pond water. Although she was amazed by what she saw, none was truly beautiful.
“What are you bringing to class?” Amy asked her friend Cathy on the bus ride to school. “A model airplane,” replied Cathy proudly. “And my brother Mathew is bringing his guitar.” Those things are nice, thought Amy, but there must be something more beautiful.
That evening, she stayed with her microscope until her father called out, “Get inside, Amy. It’s freezing outside. The weather forecast says it’s going to snow.”
Amy’s heart sank. There would be fewer things to study under the microscope. Snow would cover the area like a blanket, hiding everything from sight. Her assignment was due in just a few days. Amy began to feel panic as she was packing up her microscope. Then she caught sight of something white blown onto the stage of her microscope. Yes! The snowflake (雪花)! She looked through the microscope and was amazed by its beauty.
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“I have to show it to my class,” Amy cried excitedly.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Finally, it was the day to report.
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