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
专升本
The U.S. generates about four billion tons of solid waste a year. More than 90 percent is composed of agricultural and mining wa
The U.S. generates about four billion tons of solid waste a year. More than 90 percent is composed of agricultural and mining wa
admin
2011-04-26
53
问题
The U.S. generates about four billion tons of solid waste a year. More than 90 percent is composed of agricultural and mining wastes. About 3 percent is from industrial wastes. 250 million tons of garbage and refuse come out from homes, schools, office buildings, stores and hospitals.
This mass of metals, paper, food, plastic, rubber and glass which is all mixed together seems of no earthly use to anyone.
Or is it?
Scattered efforts across the country indicate that new technology, properly applied, might someday turn these millions of tons of refuse into an excellent source of raw materials for new uses.
Several new projects are carried out to study the possibility of treating wastes through pyrolysis (高温分解)--a system of reducing refuse to basic chemicals, liquids and gases which have commercial value. In Florida, a special tube system provides automatic transport of refuse to a central collection building.
In short, many new ideas are being tested, and many will be needed, since no one method is likely to prove suitable everywhere.
However, many difficult economic and social questions must be answered before real progress can be made. Can recovered materials compete with new materials? What will be needed as encouragement to make resource recovery work? Will citizens pay the costs of changing our waste system?
The process known as pyrolysis ______.
选项
A、treats scrap from industry
B、reduces refuse into basic chemicals
C、mixes scattered wastes together
D、provides refuse for a collection building
答案
B
解析
本题为细节辨析题。文章中提到,通过高温分解法可以将垃圾转化为具有商业价值的化学制品、液体、气体。因此,B 选项“将垃圾还原为最初的化学制品”是正确的。
转载请注明原文地址:https://kaotiyun.com/show/MLqC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
ThebabywassenttoahospitalinLondonbecause______.Theonewhofirstsuggestedthecorrectcauseofthebaby’sillnessw
Insteadofresearchingandwritingtheirpapers,somestudents______.Outof300paperscheckedforfakes,______.
Insteadofresearchingandwritingtheirpapers,somestudents______.TheresultsfromtheInternetservice______.
Accordingtothepassage,thecomingofonlinejobsearchingbrings______.ProfessorChallengerthinks______.shouldbeconsid
HolidaycelebrationsintheUnitedStatesoften______.Mary’sbirthmother______.
HolidaycelebrationsintheUnitedStatesoften______.TheWebster’sare______.
Theauthorquestionswhether,inAmerica,the"pursuitofhappiness"______.Theauthorregardsthehairdosandclothing,drugs
ThemostextraordinarydreamIever【B1】wasoneinwhichIfanciedthat,asIwasgoingintoatheater,thecloak-roomattendan
EveryoneknowsthatthefavoritefoodintheUnitedStatesisthehamburger.Itseemsimpossible,butpeopleeat34billionhamb
随机试题
CFCA数字证书服务包括CFCA数字证书、________、________、企业、个人如何获得CFCA证书。
曲面z=F(x,y,z)的一个法向量为()
男性,36岁,煤矿工人,弯腰中被重物砸伤胸背部而致腰痛,活动受限,查体:腰1、2棘突间压痛,棘间距离加大,双下肢感觉运动好。该病人的最佳治疗方法是
乳腺癌时局部皮肤橘皮样外观主要是由于癌细胞
下列有关对预决算监督的表述不正确的是()。
位于市区的某制药公司为增值税一般纳税人,该公司2020年主营业务收入5500万元,其他业务收入400万元,营业外收入300万元,主营业务成本2800万元,其他业务成本300万元,营业外支出210万元,营业税金及附加420万元,管理费用550万元,销售费用9
一般认为,态度与品德形成过程的阶段依次为依从、认同、________。
请从所给的选项中,选择最合适的一个,使之呈现一定的规律性:
下列诗词所描述的风景名胜、所处省份对应正确的一项是:
TrojanWar本题考查早期希腊神话的著名文学作品Iliad和Odyssey。讲座中提到荷马的这两首诗focusoneventssurroundingtheTrojanWar,即主要讲述了特洛伊战争,因此填入TrojanWar,注意专有名
最新回复
(
0
)