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  _____    __   __    ______    _____             
 / ____||  \ \\/ //  /_   _//  |  ___||     ___   
/ //---`'   \ ` //     | ||    | ||__      /   || 
\ \\___      | ||     _| ||    | ||__     | [] || 
 \_____||    |_||    /__//     |_____||    \__ || 
  `----`     `-`'    `--`      `-----`      -|_|| 
                                             `-`

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Text this: A comparative study of the vocabulary in primary school Chinese textbooks in the perspective of distribution, usage & level of difficulty