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
2024-01-29
57
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] What is mentioned about the earliest process of making paper?
选项
A、Its procedures.
B、Its influences.
C、Its purposes.
D、Its materials.
答案
D
解析
原文第1段第1句提到最早的造纸方法,第2句指出了最早的造纸原料来自于一种叫“纸草”的植物,因此,本题应选D。原文只有第1段与earliest paper-making有关,A、B、C均缺乏原文依据。
转载请注明原文地址:https://tihaiku.com/zcyy/3405028.html
相关试题推荐
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
Theearliestprocessofmakingpaperwasdonealmost5,000yearsagoinEgyp
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
随机试题
Watchdogsaregrowlingatthewebgiants,andsometimesbitingthem.Europea
[originaltext]HuangYiworksforacompanythatsellsfinancialsoftwareto
关于缩放Word中文本框的描述,正确的是()。A.仅缩放文本框本身,框内的文字或
导线测量外业包括踏勘选点、埋设标志、边长丈量、转折角测量和下列中哪一项的测量?
某学校兴趣小组开展“调香本地虫资源及其分布”的活动,这属于课外活动中的()A.
下列哪项不是胎膜早破的原因A.生殖道病原微生物上行感染 B.铜元素缺乏,胎膜抗
根据《证券公司监督管理条例》第二十八条的规定,下列选项中属于证券公司为客户开立证
少腹拘急冷痛,苔白,脉沉紧,其病理为A.下焦受寒,厥阴之气失于疏泄 B.肾阳不
《计价规范》中的工程量清单综合单价包括( )。 A、人工费 B、企业管理
小儿肥胖症主要的治疗手段是A.不控制食物总量的摄入 B.培养良好的饮食习惯
最新回复
(
0
)