70,80。 Tongji University has an average gpa of 5 credits, and the GPA conversion method introduces a one-year master's course with scores of 70 and 80, an average GPA of 85 to 90, and an average GPA of 90 to 90. For example, Tongji University can only get a degree certificate if the average GPA of social sciences is above 1.70, and if the CET-4 passes, if the CET-4 score is below 355, the average GPA must reach above 2.00.