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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 knowledge comes from practice. In the after- class study we can apply out knowledge to practice. Just Iike after-class study study in class is also very important. It occupies most of our time. We must pay much attention to it. In-class study and after-class study are closely connected with each other and improve each other. If that\'s the case why don\'t we combine them and study effectively? | 
