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
"Two hundred eight million, Two hundred nine million, Two hundred ten million…" That is the sound of solid waste hitting the bot
"Two hundred eight million, Two hundred nine million, Two hundred ten million…" That is the sound of solid waste hitting the bot
admin
2021-06-15
31
问题
"Two hundred eight million, Two hundred nine million, Two hundred ten million…" That is the sound of solid waste hitting the bottom of garbage cans all over United States in 1996. Solid wastes are materials that are discarded or thrown away after use by consumers and businesses. This does not included fluid materials. During that year, American threw away 210 million tons (about 43 pounds/20 kilograms per person daily) of garbage. We threw away 12. 4 million tons of glass and about 80 million tons of paper products. American also threw away large amounts (in tons) of food scraps, yard wastes, plastics, sludge from sewage treatment plants, and other materials. That is almost a mountain of garbage.
Even though we make an effort to recycle and compost our solid waste, the amount of waste keeps increasing each year. Our biggest problem is where to put the solid waste and how to keep it from polluting our environment. If solid waste is disposed of incorrectly, it can contaminate our surface and underground water supplies. Currently, our municipal waste or waste collected by our cities and towns, goes to landfills. Today, about 85% of our garbage goes to landfills or garbage dumps. This waste must be treated to keep rats, flies and other animals from building their home in the landfills. The treat also prevents the growth of bacteria and other organism that carry diseases. So, how do we handle this mountain of garbage? Scientists have come up with different methods for handing our waste problem. One type of waste disposal called sanitary landfill was first used in Fresno California, in 1937. In sanitary landfill, the solid waste is spread in thin layers that compacted and covered with a layer of earth. This is a more expensive method, but it takes away the hazards that are caused by landfills. It also allows the land to be used for building or recreation. The negative part about these landfills is that it’s tough to find open land and this process is very expensive. The land also needs its water sources protected so that the waste will not pollute the water supply. Landfills (open dumps) and sanitary landfills rely on the natural biodegradability of the solid wastes. Solid waste are biodegradable if they can decay or break down through the action of living organisms and return to the earth. However certain materials take longer to decay than others, and some materials do not decay or decompose at all. Scientists need to find other methods of waste disposal. Incineration and recycling are methods that are currently in use today.
According to the article, about______is dumped to landfills.
选项
A、12. 4 million tons of garbage
B、80 million tons of garbage
C、85% of the garbage
D、92. 4 tons of garbage
答案
C
解析
本题考查细节。根据文章第二段中的“Today,about 85% of our garbage goes to…”可知,如今大约85%的垃圾进入填埋场或垃圾场,因此,本题选c。
转载请注明原文地址:https://kaotiyun.com/show/YNTO777K
0
考博英语
相关试题推荐
Whentravelling,youareadvisedtolaketravellers’checks,whichprovideasecure______tocarryingyourmoneyincash.
Thedoctor______metothedangerofnotgettingenoughsleep.
Peter’smotherkepttellinghimthat______inthestreetisdangerous,buthewouldnotlisten.(2007年中国人民大学考博试题)
Apartfromblueeyes,blondehairisalso______ofSwedishpeople.
Thechangingimageofthefamilyontelevisionprovides______intochangingattitudestowardthefamilyinsociety.(2011年四川大学考博
Icaughta______of(hetaxibeforeitdisappearedaroundthecomerofthestreet
Itisno______thathiscarwasseennearthebankatthetimeoftherobbery.(2004年湖北省考博试题)
TheGreatWallisagreattourist______,drawingmillionsofvisitorsfromallpartsoftheworldeveryyear.(2002年上海交通大学考博试题)
Ifeachmanagermakeshisusualspeech,themeetingwillbe______forfortyfiveminutes.
Idon’tthinkMr.Watsonwillcomehereagaintoday.Pleasegivetheticketto______comesherefirst.
随机试题
DeathValleyisoneofthemostfamousdesertsintheUnitedStates,coveringawideareawithitsalkalisand.Almost20percen
沙眼的后遗症和并发症不包括
心电图检查不能反映的是
构成比之和为
等渗性脱水时补钾每小时尿量必须超过
六味安消散适用于()。
围堰初步设计阶段勘察,当其地基为基岩时,钻孔深度宜为()。
A、 B、 C、 D、 B前两行图形中,第三个图形包含前两个图形中的所有构成元素,考虑叠加。每行的第一个图形顺时针旋转45。和第二个图形叠加得到第三个图形.由此可得本题答案为B。
下面关于为基本表选择合适的文件结构的原则错误的是______。A)如果数据库中的一个基本表中的数据量很少、操作频繁,该基本表可以采用堆文件组织方式B)顺序文件支持基于查找码的顺序访问,也支持快速的二分查找C)如果用户查询是基于散列域值的等位匹配
以下程序段完全正确的是
最新回复
(
0
)