填空题

Paper is one of the most important products ever invented by man. Wide (1) use of written language would not have been possible without some (2) and practical material to write on. The invention of paper meant that (3) people could be educated because more books could be (4) and distributed. Together with the printing press, paper provided an extremely important (5) to communicate knowledge. Paper is one of the most important products ever invented by man. Wide (1) use of written language would not have been possible without some (2) and practical material to write on. The invention of paper meant that (3) people could be educated because more books could be (4) and distributed. Together with the printing press, paper provided an extremely important (5) to communicate knowledge.

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