| unit one introducing products(1) section 1 speaking section 2 listening section 3 writing unit two introducing products(2) section 1 speaking section 2 listening section 3 writing unit three introducing products(3) section 1 speaking section 2 listening section 3 writing unit four negotiations and agreements section 1 speaking section 2 listening section 3 writing unit five cooperation section 1 speaking section 2 listening section 3 writing .unit six contract section 1 speaking section 2 listening section 3 writing unit seven conference(1) section 1 speaking section 2 listening section 3 writing unit eight conference(2) section 1 speaking section 2 listening section 3 writing [ |
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