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
考研
How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questio
How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questio
admin
2010-12-05
36
问题
How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source.
For a long time, people buried garbage or dumped it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. Actually, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels. As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.
Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby buildings. In Paris, France, some power plants burn almost 2 million metric tons of the city’ s garbage each year. The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil!
But there are problems in using garbage as a fuel. Garbage that burns easily, such as food scraps and paper, must be separated from metals, glass, and other materials that do not bun easily. This separation process is normally costly. Another problem is that burning garbage can pollute the air.
Our fossil-fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs. This method could also reduce the amount of garbage piling up on the earth.
According to the passage, which of the following four groups of garbage is ready for burning?
选项
A、food scraps and metals
B、paper and glass
C、metals and glass
D、food scraps and paper
答案
D
解析
由第四段第二句“Garbage that bums easily,such as food scraps and paper,must be separated from metals,glass,and other materials that do not bun easily.”可知选D。
转载请注明原文地址:https://kaotiyun.com/show/grZ4777K
0
考研英语一
相关试题推荐
Accordingtothetext,policymakerssolvetheproblemsinthehousingmarketintheUSby______Accordingtotheauthor,the
Accordingtotheauthor,USmodernuniversities______Itcanbeinferredfromthetextthatthemostpossibledirectionofuni
Peopleoftenwonderwhyhistoriansgotosomuchtroubletopreservemillionsofbooks,documentsandrecordsofthepast.Whyd
Peopleoftenwonderwhyhistoriansgotosomuchtroubletopreservemillionsofbooks,documentsandrecordsofthepast.Whyd
Youaregoingtoreadalistofheadingsandatextabouthappiness.ChoosethemostsuitableheadingfromthelistA—Fforeach
Thoughsomepeoplehavesuggestedthatwomenshouldreturntohouseworkinordertoleave(1)_____jobsformen,theideahasbe
Thoughsomepeoplehavesuggestedthatwomenshouldreturntohouseworkinordertoleave(1)_____jobsformen,theideahasbe
WhydidtheJapanesestaffcomplaintotheAmericanmanager?TheauthorgivesadetailedexplanationoftheexamplesoftheAsi
Accordingtothepassage,whatmattersmostinletterdeliveryinBritainisthat______Onlywhen______canthepostalcodesys
RuthLawrence,agedten,madehistoryyesterdaywhenshecameaclearfirstoutofthe530candidateswhotooktheentranceexam
随机试题
A.心房肌、心室肌B.浦肯野纤维C.房室交界的结区D.窦房结E.心房肌、心室肌和结区属于慢反应自律细胞的是
下列情况为单独依靠抗结核药物治疗骨关节结核的不足,但除外
著有《小儿药证直诀》的医家是
男性,45岁,近3个月来觉头晕,低头以及头部旋转时明显,门诊就诊。该患者首选的治疗方案
热水供应系统膨胀管上设置阀门的要求是()。
根据《水电工程设计概算编制办法及计算标准》(国家经济贸易委员会2002年第78号公告),水电工程枢纽建筑物包括()等。
我国的菜籽油期货合约和天然橡胶期货合约分别是在()进行交易。
实业钢铁厂将竞选厂长。如果董来春参加竞选,则极具竞选实力的郝建生和曾思敏不参加竞选。所以,如果董来春参加竞选,他将肯定当选。为使上述论证成立,以下哪项是必须假设的?I.当选者一定是竞选实力最强的竞选者。Ⅱ.如果董来春参加竞选,那么,他将是唯一的候选人。
Hewas______bythenoiseoutsideyesterdayeveningandcouldnotconcentrateonhisstudy.
Howdopeoplecelebratethatfestivalinyourcountry?
最新回复
(
0
)