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
Until the invention of the modern washing machine, most people washed their clothes by hand. In the 20th century, however, washi
Until the invention of the modern washing machine, most people washed their clothes by hand. In the 20th century, however, washi
admin
2015-01-31
103
问题
Until the invention of the modern washing machine, most people washed their clothes by hand. In the 20th century, however, washing machine became common, and washing clothes became much easier. Washing machines, though, have some serious disadvantages. One is that they need a great deal of clean water. Another is that, in many countries, hot water is used in the machines. This consumes a lot of energy. In the United Kingdom, for example, about one-third of household energy is used for heating water, including that used to wash clothes.
Now, a British company has invented a washing machine that solves these problems by using small plastic beads to absorb dirt and clean the clothes. First, a little water is added to the clothes to get them wet. Then, the beads are mixed with the clothes until they have taken away all the dirt and stains. When the process is over, the little beads are removed by the machine, and the clothes are left almost dry. Because the beads can be used over and over, the machine costs very little to operate.
The new machine is based on the research of Stephen Burkinshaw, a chemist at the University of Leeds in the U.K. For a long time, Burkinshaw has been studying ways to make plastic materials a different color. A few years ago, he noticed that many kinds of plastic, especially nylon, attract dirt in warm and wet conditions, the surface of the nylon remains clean. For this reason, beads made of nylon can be used repeatedly until they are completely full of dirt.
The new washing machine can save households a great deal of the money they spend on water and energy. At the same time, the machines are very good for the environment. The United States, for example, uses 1.25 billion metric tons of water on washing clothes every year. If the new machines were adopted there, 90 percent of this water could be saved. The saving of electricity, meanwhile, would help decrease the amount of carbon dioxide produced by power plants. For these reasons, the company is hoping that its new "waterless" washing machines will be widely used in the future.
What is one reason the new washing machines may be good for the environment?
选项
A、People who use them would wash their clothes less often.
B、They could reduce the amount of carbon dioxide being released.
C、The plastic beads from them can be used for other purposes.
D、The water in them is recycled over and over until it is dirty.
答案
B
解析
细节题。短文最后一段指出The saving of electricity,meanwhile,would helpdecrease the amount of carbon dioxide produced by power plants.即这种新型洗衣机节约电能,这样发电厂排出的二氧化碳就会减少,从而保护了环境。故答案为B。
转载请注明原文地址:https://kaotiyun.com/show/a5q7777K
0
大学英语四级
相关试题推荐
FreeSchoolMealsMillionsofAmericanschoolchildrenarereceivingfreeorlow-costmealsforthefirsttimeastheirparen
FormanyAmericans,summerisatimetoputonswimwearandspendtimeattheseaoralake.Butbeforegoinganywhere,theyma
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
Peoplewhosejobsrequirethemtositforlongperiodsoftimesufferasmuchfrombackpainaspeoplewholiftalldaylong.
ABriefHistoryofOnlineShoppingA)WhenAmazon.comopenedforbusiness15yearsago,itwasnothingmorethanafewpeoplepac
BarackandMichelleObamaunderstandtheheavyburdenofstudentloandebt.TheObamasdidnotpayofftheirstudentloansuntil
Whenwasthelasttimeyouflashedafakesmileattheoffice?Forsome,itmaybejustanothermundane(乏味的)aspectofworklife—
A、Plantsometreesoncampus.B、Organizeapicnic.C、Buildaparkinglot.D、Protectthenaturalbeautyoncampus.D细节题。对话中weare
Languageis,andshouldbe,alivingthing,constantlyenrichedwithnewwordsandformsofexpression.Butthereisavitaldis
随机试题
律师被取消会员资格的情形不包括()
关于等渗溶液在注射剂中的具体要求,错误的是:
A.手无任何运动B.仅有极细微的屈曲C.可做勾状抓握,但不能伸指D.可侧捏及松开拇指E.可做球状和圆柱状抓握Brunnstrom分级Ⅱ级
为了实行全面成本管理,必须对施工项目成本进行层层分解,以()的成本责任制作保证。
保险对风险管理也有着实质的影响,主要表现在()。
银行业监督管理机构可以禁止商业银行的高级管理人员一定期限直至终身从事银行业工作。()
2016年9月13日,中国学生发展核心素养研究成果发布会在北京师范大学举行。会议指出,中国学生发展核心素养综合表现为人文底蕴、科学精神、学会学习、______、责任担当、实践创新六大方面。
李某花5000元购得摩托车一辆,半年后,其友王某提出借用摩托车,李同意。王某借用数周不还,李某碍于情面,一直未讨还。某晚,李某乘王某家无人,将摩托车推回。次日,王某将摩托车丢失之事告诉李某,并提出用4000元予以赔偿。李某故意隐瞒真情,称:“你要赔就赔吧。
邓小平指出:“一个党,一个国家,一个民族,如果一切从本本出发,思想僵化,迷信盛行,那它就不能前进,它的生命机体就停止了,就要亡党亡国。”这段话,非常深刻地阐明了()
若变量已正确定义并赋值,则以下符合C语言语法的表达式是()。
最新回复
(
0
)