intended for english-speaking learners, these chinese teaching materials are designed to develop the learners' ability to listen, speak, read and write, as well as the ability to communicate in social settings.
exercise book (vols.1-4)：these exercises are comprehensive, and from easy to difficult, the exercises are designed to meet the need of learners with different skill-levels.
cassette tapes and video tapes are also available to accompany the textbooks.
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