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
As the cost of gas and oil for home heating has gone up, many Americans have switched from these fuels to wood for heating their
As the cost of gas and oil for home heating has gone up, many Americans have switched from these fuels to wood for heating their
admin
2012-10-20
31
问题
As the cost of gas and oil for home heating has gone up, many Americans have switched from these fuels to wood for heating their homes. In 1973, approximately 200,000 wood-burning stoves, intended for home use, were sold in the United States; by 1979, this figure had reached one million; and by the end of 1981, there were as many as seven million home owned wood-burning units in operation in the U. S.
In addition to low fuel bills, many people choose these stoves because their initial cost is very low (the prices range from $ 50 kits to $ 5,000 top-of-the-line models), and because new technology has made wood fires more efficient, cleaner, and, therefore, safer than ever before.
One new technological feature of this type is the catalytic(催化) combustor which adds about $ 100 to $ 200 to the cost of the stove, but which causes much more complete combustion (燃烧) of the wood and therefore bums up more of the pollutants left by incomplete combustion and produces more heat.
A second cost-saving innovation is a device which agitates the wood, increasing the amount of oxygen that reaches the center of the wood pile, and leading to more efficient combustion. The real advantage of this device is that it allows the owner to make use of cheap sources of wood such as dirty wood chips (an industrial by-product) that have almost no commercial value, cost as little as $ 20 a ton, and burn very inefficiently in furnaces without an agitator.
Which of the following statements is NOT true?
选项
A、Wood-bunting stoves are safer and more efficient than they used to be.
B、No factories exist for the purpose of producing dirty wood chips.
C、Both catalytic combustors and wood agitators save money in the long run.
D、Wood-burning stoves with catalytic combustors cost between $ 100 and $ 200.
答案
D
解析
A项文中第二段提到,正确;B项最后一段括号内注明(an industrial by-product)是副产品,没有工厂专门生产的,正确;C项可从三、四两段的描述中得知,从长远来看都是省钱的好东西,正确;而D项混淆了adds about $ 100 to $ 200与costs about $ 100 to $ 200,原句是附加了钱,而不是只值这些钱,所以不正确。
转载请注明原文地址:https://kaotiyun.com/show/TLhK777K
0
专业英语四级
相关试题推荐
Whydoadultsbelievethatalcoholicawarenessprogramsteachyoungpeoplenottoover-drink?Recently,readinganarticleabout
You______himsoseverely;youshouldbetoleratetohim.
Americansbelievetimeisalimitedresource;theytrytoconserveandmanageit.PeopleintheU.S.often【C1】______seminarsor
TheWorldHealthOrganizationreportedtheenvironmentalhealthrisks,NOTincluding
Language,cultureandpersonalitymaybeconsidered______ofeachotherinthought,butthetruthisthattheyareinseparable.
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,thechoiceofan【C1】______should【C2】______evenbefor
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,thechoiceofan【C1】______should【C2】______evenbefor
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,thechoiceofan【C1】______should【C2】______evenbefor
Thelinebackerandcaptainoftheteam______mostvaluableplayer.
Pleasetellhimthathecandial110______emergency.
随机试题
下列哪一项与轴性近视无关
癔病患者感觉过敏或缺失不具备下列哪种特点
患者,女性,65岁,因患糖尿病10年而长期接受胰岛素治疗,尿糖基本控制在+~++。近期因劳累自测尿糖定性试验为+++,自行增加了12U胰岛素,1小时后突然感到心悸、饥饿、出冷汗,随即昏迷。对上述患者,应立即给予下列哪项处理措施
建造师执业资格注册有效期一般为( )年。
下列各项中,属于会计工作岗位的有()。
私募基金管理人管理不同类别私募基金的,应当坚持()原则;管理可能导致利益输送或者利益冲突的不同私募基金的,应当建立防范利益输送和利益冲突的机制。
根据我国法律的规定,设立外商投资企业,外方投资者以外币缴付出资,应当按照一定的标准折算成人民币或套算成约定的外币,该标准是()。
某小区有2013位业主,每天他们都要参加一次聚会就选举居委会主任进行讨论,候选人有甲、乙两人,每场聚会的人数规模是3或5人(可以有很多场)。若当场聚会支持某一方的占大多数,则其余人也改为支持这个人。在第三天聚会结束后进行的投票中,甲以全票当选,那么最开始支
Thenewlyelectedpresidenthaspledged$13milliontotheautomobileindustryforitssurvival.
(2011年单选2)甲是某运输公司的经理,为了抢运煤炭,甲亲自跟车督促驾驶。在驾驶员乙已连续驾驶10多个小时的情况下,甲仍强令乙继续驾驶。乙因过度疲劳,操作失当,驾驶中撞死路边一摆摊商贩。关于本案,下列说法中正确的是()。
最新回复
(
0
)