首页
登录
职称英语
The earliest process of making paper was done almost 5,000 years ago in Egyp
The earliest process of making paper was done almost 5,000 years ago in Egyp
游客
2024-02-02
4
管理
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. [br] 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://www.tihaiku.com/zcyy/3414434.html
相关试题推荐
[originaltext](5)Egyptianofficialsaremakingplanstoopenanewly-expan
[originaltext](5)Egyptianofficialsaremakingplanstoopenanewly-expan
和亲(peace-makingmarriage)政策可以追溯到西汉时期(theWesternHanDynasty)。当时西汉政府为了缓和与匈奴的
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
随机试题
______itisyou’refound,youmustgiveitbacktothepersonitbelongsto.A、T
【S1】[br]【S8】Anormalbearingload指通常所能承受的压力。结合上下文可知,此处应是说上部楼层下落时产生的力要超过下部楼层通常承
对图中上方标志的含义是“露天停车场”,下方标志的含义是“距离某地200米”。
目前ELISA技术中最常用的底物是A.邻苯二胺 B.四甲基联苯胺 C.ABT
A.上颌双侧垫矫治器 B.Nance弓 C.带环 D.箭头卡环 E.舌习
对下颌第三磨牙进行钳拔脱位时,应先向A.远中用力 B.近中用力 C.垂直用力
(1)申请专利(2)研制出新产品(3)起诉索赔(4)发现仿制品(5)败诉
(二) 2008年我国居民消费价格涨跌幅度单位:% 指标 全国 城市
国家助学贷款的还款方式有()。A.等额变更还款法 B.每月还息到期还本
根据《民法典》的相关规定,关于违约责任的说法,正确的有()。A.违约责任以
最新回复
(
0
)