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小作文 柱状图 Bar chart，比较2000年到2007年waste not recycle和recycle区别; 大作文 Space travel has been possible for some time and some people think the space tourism could be developed in the future.To what extent do you think its a positive or negative development? G类 More an more young adults claim mobiles are their most important belongings, is the popularity of having mobiles good thing or bad thing? | 
