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
37
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] When the paper is lifted from the mold, it is time to _____.
选项
A、make it smooth
B、make it strong
C、decorate it
D、iron it
答案
A
解析
最后两段是手工造纸的最后两个步骤,最后一段是最后一个步骤,表明把纸从模子中取出后,应该把纸压平,去除残留的空气,A与原文的The paper is smoothed同义,为本题答案。本题较具干扰性的是B和D。B用了倒数第2段末尾的strong一词,倒数第2段表明把纸从模子中取出时,纸已变得相当坚韧了,因此,B不符合造纸步骤的先后顺序;D用了最后一段最后一句的iron一词作干扰,但用普通电熨斗只是把纸压平的一个办法,原文未表明这是一定得用的方法,因此,D也不对。
转载请注明原文地址:https://tihaiku.com/zcyy/3414731.html
相关试题推荐
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]Acommunitytheatreisanimportantpartofalmosteverycity
Byalmostanymeasure,thereisaboominInternet-basedinstruction.Injus
Byalmostanymeasure,thereisaboominInternet-basedinstruction.Injus
Byalmostanymeasure,thereisaboominInternet-basedinstruction.Injus
Mostpeoplethinksuccessisagoal.Idonot.Iseesuccessasaprocess.M
Mostpeoplethinksuccessisagoal.Idonot.Iseesuccessasaprocess.M
Mostpeoplethinksuccessisagoal.Idonot.Iseesuccessasaprocess.M
随机试题
Iwouldliketoexpressourappreciationofyourcooperationonbehalfofmycol
A.先行抗炎治疗再清宫 B.先做凝血功能检查 C.立即刮宫 D.不需特殊处
D
NF-1基因突变可引起A.神经纤维瘤病 B.结肠腺瘤性息肉病 C.肾母细胞瘤
关于地方政府债券,以下说法正确的是()。 A.一般责任债券的还本付息
求助者一般资料:吴某,女性,26岁,某工厂职工,身体健康,无躯体不适。 由同
治痰热咳嗽,痰黄黏稠,宜首选A.半夏天麻丸 B.礞石滚痰丸 C.复方鲜竹沥液
综合防灾规划的内容包括( )。A.人防规划 B.消防规划 C.防震减灾规划
设计施工总承包合同的通用条款包括( )。A.发包人义务 B.承包人义务 C
OR的流行病学含义为A.暴露于某因素的发病率 B.暴露组与非暴露组发病比值
最新回复
(
0
)