Since the Brother Wright's invention of airplane in 1903, we human beings are able to fly like birds. And now, more than 100 years passed, the plane changed from a bookshelf into huge jet plane,carring more than 500 people, from one place to another within a day, however far it is. Although sometimes there maybe some wreckages, it still one of the most safest form of transportation. Airplane is a crystal of wisdom, which helps us improve the quality of our life.
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