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
2023-06-24
41
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] The passage is most probably intended to _____.
选项
A、introduce the history of paper-making
B、describe the process of paper-making
C、compare the ancient and the modern paper-making
D、argue the possibility of paper-making by hand
答案
B
解析
前4段介绍了造纸术的发展,第5段至最后一段描述了造纸的步骤,据第4段的最后一句的But…可知作者强调的是造纸的步骤,因此,本文主要是为了介绍造纸的过程,故选B。D很具干扰性,the possibility of paper-making by hand在第4段最后一句提到,但是作者在本文并没有为任何观点而argue,全文的语气是描述性的,因此,D不正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2780079.html
相关试题推荐
[originaltext](3)TennisplayersmustwearalmostallwhiteatWimbledon.T
[originaltext](3)TennisplayersmustwearalmostallwhiteatWimbledon.T
There’sNoPlaceLikeHome[A]Onalmostanynightofthe
There’sNoPlaceLikeHome[A]Onalmostanynightofthe
There’sNoPlaceLikeHome[A]Onalmostanynightofthe
There’sNoPlaceLikeHome[A]Onalmostanynightofthe
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
随机试题
Necessarymeditationsontheactual,includingthemeanbread-and-cheeseque
在逃去如飞的日子里,在千门万户的世界里的我能做些什么呢?只有徘徊罢了,只有匆匆罢了;在八千多日的匆匆里,除徘徊外,又剩些什么呢?过去的日子如轻烟,被微风
Thestudentsoftenhave(heat)______discussionintheclass.heatedhaveaheated
[originaltext][5]AtourboatturnedoveroffthecoastofNicaragua,killin
没有充分考虑利用围岩的自承作用,要求初期支护具有一定刚度,以改造地质条件为前提,
开采深度越深,煤层瓦斯含量越(),瓦斯涌出量越();开拓与开采范围越大,瓦斯
8岁男孩,因尿少,浮肿3d伴头痛、呕吐1d来院急诊,就诊时突然意识丧失.惊厥发作
关于色甘酸钠作用说法正确的是A、可直接松弛支气管平滑肌 B、抑制过敏性介质的释
血浆清除率接近于零的物质是( )。A.葡萄糖 B.菊粉 C.内生肌酐 D
纳税人支付下列款项取得的增值税普通发票或增值税电子普通发票,发票税率栏填写为“不
最新回复
(
0
)