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
2023-07-02
46
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/2801756.html
相关试题推荐
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
Therearerareinstanceswhenjusticealmostceasestobeanabstract【C1】___
MuchofCanada’sforestryproductiongoestowardsmakingpulpandpaper.Acc
MuchofCanada’sforestryproductiongoestowardsmakingpulpandpaper.Acc
MuchofCanada’sforestryproductiongoestowardsmakingpulpandpaper.Acc
MuchofCanada’sforestryproductiongoestowardsmakingpulpandpaper.Acc
随机试题
Theteachertriedtomakethenewstudentfeel______.A、witheaseB、atleisureC、
Consumersarebeingconfusedandmisledbythehodge-podge(大杂烩)ofenvironmen
Thisprojectwould______ahugeincreaseindefensespending.A、resultB、assureC、
HappinessandSadnessA)Happinessandsadnessaretwomo
错依据《实施条例》第52条第4项。
以下关于路由器和交换机的说法中,错误的是()A.为了解决广播风暴,出现了交换机
对怀疑丙种球蛋白缺陷型的患者应做的检查是()。A.T细胞亚群测定 B.E
李某将自己拥有的一套地理位置好、具备交易条件的房屋委托给甲房地产经纪公司(以下简
这种灭火系统灭火剂是一种由氧化剂、还原剂、燃烧速度控制剂和黏合剂组成的固体混合物
下列指数中,属于数量指标指数的是()。 A.商品销售指数 B.产品价格指
最新回复
(
0
)