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 technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists e
The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists e
admin
2012-01-19
57
问题
The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists enjoyed a great advantage.Especially by comparison with Britain,Americans had a wonderfully plentiful supply of wood.
The first colonists did not, as many people imagine, find an entire continent covered by a continuous forest.Even along the Atlantic seaboard, the forest was broken at many points.Nevertheless, all sorts of fine trees abounded, and through the early colonial period, those who pushed westward encountered new forests.By the end of the colonial era, the price of wood had risen slightly in eastern cities, but wood was still extremely abundant.
The availability of wood brought advantages that have seldom been appreciated. Wood was a foundation of the economy.Houses and all manner of buildings were made of wood to a degree unknown in Britain.Secondly, wood was used as a fuel for heating and cooking.Thirdly, it was used as the source of important industrial compounds, such as potash, an industrial alkali; charcoal, a component of gunpowder, and tannic acid, used for tanning leather.
The supply of wood conferred advantages but had some negative aspects as well. Iron at that time was produced by heating iron ore with charcoal.Because Britain was so stripped of trees,she was unable to exploit her rich iron mines.But the American colonies had both iron ore and wood;iron production was encouraged and becamesuccessful. However, when Britain developed coke smelting, the colonies did not follow suit because they had plenty of wood and besides, charcoal iron was stronger than coke iron.Coke smelting led to technological innovations and was linked to the emergence of the Industrial Revolution.In the early nineteenth century, the former colonies lagged behind Britain in industrial development because their supply of wood led them to cling to charcoal iron.
Why does the author mention gunpowder in Paragraph 3?
选项
A、To remind readers that the colonial era ended in warfare.
B、To give an example of a product made from wood consumption.
C、To illustrate some negative aspects of some industrial processes.
D、To suggest that wood was not the only important product of the colonies.
答案
B
解析
推理题。文章第三段提到木材的优势,其中第三点是木材被用作重要 工业化合物的原料,随后给出儿个例子,如碳酸钾、木炭和单宁酸,其中 木炭是火药的组成成分,由此可知,作者提到火药,目的是作为木材产品 的例证,因此应选择[B] 。
转载请注明原文地址:https://kaotiyun.com/show/HWjd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfasta
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfasta
MostradioandtelevisionstationsintheUnitedStatesarecommercialstations,【C1】______istosay,theyearntheirmoneyfrom【
MostradioandtelevisionstationsintheUnitedStatesarecommercialstations,【C1】______istosay,theyearntheirmoneyfrom【
PsychologistGeorgeSpilichandcolleaguesatWashingtonCollegeinChestertown,Maryland,decidedtofindoutwhether,asmany
Text…Thedecrease【C1】______bloodpressureoccurred【C2】______raceor【C3】______andwhetherornotstudyparticipantsarea
Text…Thedecrease【C1】______bloodpressureoccurred【C2】______raceor【C3】______andwhetherornotstudyparticipantsarea
Applecomputerintroduceditspioneering,user-friendlyMackintoshcomputerin1984.The"Mac"quicklybecamepopularandappear
Applecomputerintroduceditspioneering,user-friendlyMackintoshcomputerin1984.The"Mac"quicklybecamepopularandappear
Applecomputerintroduceditspioneering,user-friendlyMackintoshcomputerin1984.The"Mac"quicklybecamepopularandappear
随机试题
抗甲状腺药物最常见的不良反应是()
口腔健康咨询时,一青年认为牙好坏是天生的,刷不刷牙无所谓,口腔医生告诉他正确的认识应是
A、主要扩张冠状动脉,增加氧供B、以降低氧耗量为主C、增加心肌收缩力D、降低外周阻力E、降低前负荷利尿剂
“刚脏”指的是哪一脏
人民法院受理申请后,经审查债权人提出的事实、证据,认为债权人的申请不符合法定条件的,裁定予以驳回,会产生哪种法律后果?()
移动平均法()。
在系统效率SE和寿命周期LCC之间进行权衡时,可采用的有效手段有( )。
施工总平面图的设计依据包括( )。
《消防控制室值班记录表》和《建筑消防设施巡查记录表》的存档时间不应少于()年。
Inordertopreventstressfrombeingsetupinthemetal,expansionjointsarefittedwhich_____thestressbyallowingthepipe
最新回复
(
0
)