首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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
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
admin
2016-04-30
45
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.
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://kaotiyun.com/show/zSe7777K
0
大学英语四级
相关试题推荐
Housingofficialssaythatlatelytheyarenoticingsomethingdifferent:studentsseemtolackthewill,andskill,toaddresst
Solongasteachersfailtodistinguishbetweenteachingandlearning,theywillcontinuetoundertaketodoforchildrenthatw
TheArtofFriendshipA)OneeveningafewyearsagoIfoundmyselfinananxiety.Nothingwasreallywrong—myfamilyandIwere
ManyfamiliesintheUnitedStateshavealargerincomenowthaneverbefore,butpeoplearefindingitdifficulttomakeendsm
Theconceptofculturehasbeendefinedmanytimes,andalthoughnodefinitionhasachieveduniversalacceptance,mostofthede
About2percentofAmericanstudentsarenowtaughtathome.Educatorsareconfusedabouthowthisgrowingpracticeshouldbere
About2percentofAmericanstudentsarenowtaughtathome.Educatorsareconfusedabouthowthisgrowingpracticeshouldbere
Therearetwotypesofpeopleintheworld.Althoughtheyhaveequaldegreesofhealthandwealthandtheothercomfortsoflife
TheincreasingAmericanizationofJapaneselifeisevidentinmanyways.Onesuchwayisthegrowingpopularityofcreditcards.
Todaywetalkaboutthedifferencebetweenacollegeandauniversity.Collegesanduniversitieshavealotincommon.Theyprep
随机试题
下列公式不正确的是()
长期肠外营养支持后出现肝功能损害的主要原因是
施工方项目管理的目标体系包括项目施工质量。成本、工期以及()。
下列关于基金托管人的信息披露义务的说法,不正确的是()。
根据基金募集方式的不同,基金分为公司型基金和契约型基金。()
某工厂正在研究选择具有同一功能的A、B两种机械哪一种有利的问题,两机械的寿命都是7年。初期投资额,A机械为10万元;B机械为14万元。每年的作业费用(假定为每年年末),A机械为2万元;B机械为0.9万元。该厂拟定的收益率为12%。已知:(P/A,12%
何承天在乐律学史上提出了()
法人资本所有制是法人股东化的产物,其基本特点是
HowtoDuckCabinFeversAndOtherAchesonaPlane?[A]Onthefirstlegofthisseason’sholidaytraveltour,Ihadthedelight
Hethinkshighlyofhimself,soIdon’tlike____________(他说话的方式).
最新回复
(
0
)