Unit One
1.Vocabulary and Structure
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Unit Two
1.Vocabulary and Structure
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Unit Three
1.Vocabulary and Structure
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Unit Four
1.Vocabulary and Structure
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Unit Five
1.Vocabulary and Structure
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Unit Six
1.Vocabulary and Structure
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Test Paper One
Test Paper Two
Appendix Ⅰ:
1.Key to Unit One
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Appendix Ⅱ:
1.Key to Test Paper One
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