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æè¦ï¼šStudy in Class and out of Class Our study can be divided into two parts: one is in class and the other is out of class. Both of them are important to students. They depend on each other. We must attach importance to after-class What we have learnt in class is very. limited, because only knowledge in textbooks can be acquired. However, we can learn more out of class. A most important thing is that ..