Chemical class is the compulsory course in the middle school. It is one of my favorable classes. When I first contact with this subject, I am interested in it. In my mind, it is miracle. It can see the nature of object. For example, through chemical class, I learn how does water form. Knowing this makes me feel like a little talent. I have a great sense of achievement. Maybe it is my curiosity makes me like this class so much. To be honest, to explore knowledge is very excited and interesting
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