首页
登录
职称英语
[originaltext] The earliest process of making paper was done almost 5 000 ye
[originaltext] The earliest process of making paper was done almost 5 000 ye
游客
2023-08-17
49
管理
问题
The earliest process of making paper was done almost 5 000 years ago in Egypt.(9)In those days, paper was made from strips of a special plant. Modern paper-making began in China about 2 000 years ago. At that time, paper was made from cloth, straw, wood or the bark of trees. 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’s still possible to make paper by hand, since the steps are the same as using big machines.(10)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. They should be cut into pieces about five centimeters by five centimeters. Everything is placed in a container, covered with water and brought to the boil. It is mixed for about two hours with some common chemicals and then allowed to cool. Then it’s left until most of the water dries up. The substance left, called pulp, can be stored until you’re ready to make paper. When you’re ready, the pulp is mixed with water again.(11)Then the pulp is poured into a 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’s now strong enough to be touched.
9. Which of the following is used in the earliest paper-making?
10. What is the most ideal material for making paper by hand?
11. What is the purpose of a mold in making paper?
12. What does the passage mainly tell us?
选项
A、To mix pulp with water.
B、To keep the shape and thickness of the paper.
C、To keep the paper strong enough.
D、To dry the paper quickly.
答案
B
解析
本题问的是在造纸时使用模具的目的。短文末尾部分提到造纸时模具的作用是保持纸的形状和厚度。
转载请注明原文地址:https://tihaiku.com/zcyy/2933168.html
相关试题推荐
[originaltext](22)WhenHolly,thehousecat,turnedupamilefromtheWes
[originaltext](22)WhenHolly,thehousecat,turnedupamilefromtheWes
[originaltext]Theysaythatwritingaboutmusicislikedancingaboutarchi
[originaltext]Theysaythatwritingaboutmusicislikedancingaboutarchi
[originaltext]W:Well,youseemtohavesomethingonyourmind,Philip.M:Yes,
[originaltext]W:Well,youseemtohavesomethingonyourmind,Philip.M:Yes,
[originaltext]W:Waitaminute!Let’slistentothatstation,Frank!Doyoukno
[originaltext]W:Waitaminute!Let’slistentothatstation,Frank!Doyoukno
[originaltext]M:Goodmorning,Madam.CanIhelpyou?W:Yesterdaymydaughter
[originaltext]M:Goodmorning,Madam.CanIhelpyou?W:Yesterdaymydaughter
随机试题
Thespaceshuttle【D1】______madeararenightlandingattheKennedySpaceC
Peopletendtocollectpossessions,sometimeswithoutbeingawareofdoings
Sugarlessyoghurt(酸奶)couldhelpbeatbadbreath,toothdecayandgumdisea
超导现象是指材料在一定条件下,内部电阻变为零的现象。超导材料这一特性并未得到实际
根据下列统计资料回答问题 2003年,加拿大GDP在表中所列国
宏观金融风险管理可采用的手段有:A.建立市场运行的法规体系 B.制定恰当的经
对怀疑有骨盆骨折的患者应首先关注的是()。A.血压变化 B.腹部体征 C.
设L是从点(0,0)沿:y=1-x-1至点(2,0)的折线段,则曲线积分xd
属于咀嚼黏膜的是( )黏膜。A.颊黏膜 B.舌背 C.硬腭 D.舌腹
根据增值税的相关规定,下列可以按照销售净额作为销售额计算增值税的是( )。A.
最新回复
(
0
)