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year witnessed a steady increase by billion cubic 1995, the output had increased to billion cubic meters, an increase by about 13% over that of are many factors leading to this sharp increase in its name only a few, the greater industrial demand, demands from daily life, convenience and cleanness in itself, its output conclusion, we can safely predict the output will continue to increase in the foreseeable future because of the greater demands for Importance of Interpersonal Entering the 21st century, man is now in an age of information and such an age, interpersonal munication plays an increasingly important role and all people have to municate with is interpersonal munication so important? First, it helps people understand each other , it helps people get more information and , without interpersonal munication, our life would bee a desert of emotion and but not the least, munication between people makes our life lively, interesting and a word, humans, as social animals, have to municate with each other, the importance of which can never be is interpersonal munication so important? Interpersonal munication is just like a bridge of understanding between example, it helps students to learn more effectively if one can municate more with his teachers and a family, munication makes the family members understand each other better and get the workplace, munication between the employer and the employed creates a friendly and helpful working 8 How to Study EffectivelyAs students, we have to study almost every , how can we study effectively? Probably not everybody a look at the following graph and we may know better about graph shows the relationship between the amount of study efficiency and the hours spent in studying in a it, we can see that more hours of study do not necessarily result in better or higher study the graph, the best amount of efficiency or the optimum of efficiency es when one has studied for