首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The earliest process of making paper was done almost 5,000 years ago in Egypt and the Nile Valley. In those days, paper was made
The earliest process of making paper was done almost 5,000 years ago in Egypt and the Nile Valley. In those days, paper was made
admin
2016-10-07
56
问题
The earliest process of making paper was done almost 5,000 years ago in Egypt and the Nile Valley. In those days, paper was made from strips of the papyrus plant.
Modern paper-making began in China about 2,000 years ago. This process produced paper from cloth, straw, wood or the bark of trees. The raw materials are struck over and over until they become loose. Then they are mixed with water.
After the water has been removed, the flat, thin form remaining is permitted to dry. This becomes a sheet of paper.
Large machines started to be used for making paper near the end of the 16th century. Today, paper-making is a big business. But it is still possible to make paper by hand, since the steps are the same as using big machines.
You should choose paper with small amounts of printing. Old envelopes are good for this reason. Colored paper also can be used, as well as small amounts of newspaper. Small pieces of rags or cloth can be added. These should be cut into pieces about 5 centimeters by 5 centimeters.
Everything is placed in a container, covered with water, and brought to a boil. It is mixed for about 2 hours with some common chemicals and then allowed to cool. Then it is left until most of the water dries up. The substance left, called pulp, can be stored until you are ready to make paper.
When you are ready, the pulp is mixed with water again. Then the pulp is poured into a special box or mold. The mold is made of small squares of wire that hold the shape and thickness of the paper. To help dry the paper, the mold lets the water flow through the small wire squares.
After several more drying steps, the paper is carefully lifted back from the mold. It is now strong enough to be touched.
The paper is smoothed and pressed to remove trapped air. You can use a common electric iron used for pressing clothes.
It is suggested that we "should choose paper with small amounts of printing" to _____.
选项
A、make paper by ourselves
B、renew the old envelopes
C、make various colored paper
D、create our own newspaper
答案
A
解析
结合第4段最后一句和接下来的所有段落便知这一句提到的是手工造纸步骤的第一步,由此可见,选择用paper with small amounts of printing是为了“手工造纸”,且接下来的几个段落进一步详述了造纸的其他步骤,因此,本题应选A。
转载请注明原文地址:https://kaotiyun.com/show/arY7777K
0
大学英语四级
相关试题推荐
Americansbelievethatindividualsmustlearnto【B1】_______themselvesorrisklosingfreedom.Thismeansachievingbothfinanci
Moreandmoreoftheworld’spopulationarelivingintownsorcities.Thespeedatwhichcitiesaregrowinginthelessdevelop
UniversitiesBranchOutA)Asneverbeforeintheirlonghistory,universitieshavebecomeinstrumentsofnationalcompetitionas
ElNinoisthenamegiventothemysteriousandoftenunpredictablechangeintheclimateoftheworld.Thisstrange【C1】______h
ElNinoisthenamegiventothemysteriousandoftenunpredictablechangeintheclimateoftheworld.Thisstrange【C1】______h
Theygotooneoftheworld’smostprestigiousuniversitiesandpridethemselvesontheirsuperiorintellectbutalmosthalfof
Theygotooneoftheworld’smostprestigiousuniversitiesandpridethemselvesontheirsuperiorintellectbutalmosthalfof
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foodscangobadiftheygettoowarm.Butformanyofth
Afewdegreescanmakeabigdifferencewhenitcomestofoodstorage.Foodscangobadiftheygettoowarm.Butformanyofth
随机试题
神经纤维中相邻两个锋电位的时间间隔至少应大于其
捻转泻法为指
正常胃液为
吸宫术后注意事项,不正确的是
下图为某沿城市道路建设的小商品市场总平面简图,导入顾客人流最差的方案是()。
对于刚开始进行组合管理的商业银行,可主要设定()的集中度限额。
在C国,卫浴产品属于兼具功能性和时尚性的产品。其功能性和外观时尚性的不同导致了不同企业之间的差异。T公司、K公司都为知名的国际品牌企业。设计研发水平高,在品牌塑造上投入较大,具有很强的品牌影响力,其提供的产品和服务的特征是追求顾客的高端体验,满足了顾客对
小明骑自行车到朋友家聚会,一路上他注意到每隔12分钟就有一辆公交车从后边追上。小明骑着骑着突然车胎爆了,他只好以原来骑车三分之一的速度推着车往回走,这时他发现公交车以每隔4分钟一辆的频率迎面开过来,公交车站发车的间隔时间到底为多少?
(上海财大2012)在下列指标中反映企业营运能力的是()。
在软件工程中,白箱测试法可用于测试程序的内部结构。此方法将程序看做是()。
最新回复
(
0
)