题型：语法填空（语篇） 题类：常考题 难易度：困难
安徽省黄山市屯溪第一中学2018-2019学年高二上学期英语期中考试试卷
Xuan paper, known as one of the Four Treasures of Study, first came into (exist) in Xuan Prefecture in the Tang dynasty. The traditional skill of making the paper hand has been passed down through generations. The process takes as many as 100 steps, all of require a level of delicacy.
Take papermaking master Zhou Donghong for example. He uses a fine screen to filter（过滤） a mixture of water and fibers. He lifts it up, and it's a sheet of paper. It takes him and his partner only 15 seconds (form) and shape it, but they've devoted (them) to perfecting the skills for decades.
"There are a lot of tricks of filtering the fibers, and timing is the (difficult) part of all. We have only one chance to filter the right amount of fibers, and only the proper weight guarantees the paper is neither too thin nor too thick, and the margin for error is (extreme) small," said Zhou. With just the right degree of thickness, top quality Xuan paper holds ink and water tightly.
The skill of papermaking, (recognize) as a national treasure, has also proven to be an international one. We felt great sense of pride as it was listed as a world intangible culture heritage(非物质文化遗产) by UNESCO in 2009. Since then, in Jingxian County, Xuan papermaking (teach) in schools.
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