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paperback. Condition: New. Paperback Pages Number: 42 Bentaocongshu content-rich. easy to increasingly difficult and highlights the following main characteristics: classification clear: The combination of the latest issued by the national English curriculum standards (trial version) the spirit of division for the year to follow the language learning the law. give full consideration to the characteristics and needs of the students 'physical and psychological development of the different ages; with tape: help to improve .