The second is the level of student input in the 50 to 850 points. with a score of 50 points is too low, but 850 points is a very high level. And that's a reasonable benchmark for foreign language teachers. So to bring to a conclusion as Head of Department of the University said, if put all students in the same class, the gifted students are wasting also poor students do not learn. And so we have the input level is not uniform.
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