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
How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important que
How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important que
admin
2008-11-13
82
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. However, 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 bums easily, such as food scraps and paper, must be separated from metals, glass, and other materials that do not burn easily. This separation process is normally costly. (79)
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. (80)
This method could also reduce the amount of garbage piling up on the earth.
选项
A、The shortage of energy and air pollution.
B、The shortage of energy and the shortage of empty land for holding garbage.
C、Air pollution and the shortage of empty land for holding garbage.
D、Air pollution and the shortage of fossil fuel.
答案
B
解析
文章第一段就提出了这两个问题。
转载请注明原文地址:https://www.kaotiyun.com/show/PdPO777K
0
成人本科学位英语
相关试题推荐
There’sagreatstoryaboutanoldFinnishwomanwho,withoutquiterealizingit,wasusinghercell-phonetoaccesstheInterne
Beforethesummerof2000,the54-year-oldJohnHaughomcouldaccomplishjustaboutanythingatwork."Icouldmovemountainsif
HistorianstendtotellthesamejokewhentheyaredescribinghistoryeducationinAmerica.It’stheone【C1】______theteachers
Youaretowriteinnolessthan120wordsaboutthetitle"TheProportionofWomen’sIncometoMen’sIncome".Youshouldbasey
SometimesanEnglishmanis______enthusiastic,emotional,excited,etcthananyothernationality,buttendstodisplayhisfeel
Youaretowriteinnolessthan120wordsaboutthetitle"CompetitionsandSocialDevelopment".Youshouldbaseyourcompositi
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Whatweknowofprenataldevelopmentmakesallthisattemptmadebyamothertomoldthecharacterofherunbornchildbystudyi
Besidesactiveforeignenterprisesanda【C1】______numberofprivateemployers,aconsequentialnewdevelopmentwasthedevelopme
Ithasneverbeeneasytobeateenager,anditisparticularlydifficulttoday.Theworldexpectsustobegrownupbutrarely
随机试题
本案中,应当就该批化工原料在运输途中的风险投保的是()该化工原料被水浸泡的风险应当由()承担
关于土地权属争议的调解书及其效力叙述正确的是()。
行政复议机关责令被申请人重新作出具体行政行为的,被申请人应当在法律、法规、规章规定的期限内重新作出具体行政行为;法律、法规、规章未规定期限的,重新作出具体行政行为的期限为()。(2008年)
家里的白炽灯用久了会发黑,是因为()。
求一个正交变换,化二次型f=x12+4x22+4x32-4x1x2-8x2x3,为标准形.
IPv4地址和IPv6地址的位数分别为()。
一个字长为6位的无符号二进制数能表示的十进制数值范围是()。
Itwasabout600years______thatthefirstclockwasmade.
Wheredoesthisconversationmostlikelytakeplace?
Googlerecentlyintroducedanewservicethataddssocial-networkingfeaturestoitspopularGmailsystem.Theserviceiscalled
最新回复
(
0
)