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图表作文 饼状图 图表instruction The pie charts below give the information about the percentage of working time spent on different tasks in a typical office in the US in 1980 and 2006. 图表要素回忆 using phone降了一半12%-6% using computer大涨 using paper documents大降 talk to colleagues 降 formal meetings 没变 14% others降了一点儿. | 
