What's the difference between the university and the middle school?

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I'm a newcomer to the university.I have adjusted to the new environment.Today,we had a simple exam of maths.And I feel there is amlost no difference between the university and the middle school in studying.All of us should also study hard in the university.But in the life,there are many differences.We have more spare time and we are more free.We should learn to make plans.And in the university,we should learn to communicate with others. In a word,we should not only keep studying,but also,learn to live in the new environment. What do you think about this?