首页
登录
职称英语
Coal is expected to continue to account for almost 27 percent of the world’
Coal is expected to continue to account for almost 27 percent of the world’
游客
2024-10-15
43
管理
问题
Coal is expected to continue to account for almost 27 percent of the world’s energy needs. With growing international awareness of pressures on the environment and the need to achieve sustainable development of energy resources, a wide range of pollution control practices is in place at most modem mines. In addition, major research and development programmers are being devoted to lifting efficiencies and reducing emissions of greenhouse gases during coal consumption. Such measures are helping coal to maintain its status as a major supplier of the world’s energy needs.
The coal industry has been targeted by its critics as a significant contributor to the greenhouse effect. However, the greenhouse effect is a natural phenomenon involving the increase in global surface temperature due to the presence of greenhouse gases—water vapor, carbon dioxide, methane and nitrous oxide--in the atmosphere. Without the greenhouse effect, the earth’s average surface temperature would be 33-35℃ lower, or -15℃. Life on earth, as we know it today, would not be possible.
There is concern that this natural phenomenon is being altered by a greater build-up of gases from human activity, perhaps giving rise to additional warming and changes in the earth’ s climate. This additional build-up and its forecast outcome has been called the enhanced greenhouse effect. Considerable uncertainty exists, however, about the enhanced greenhouse effect, particularly in relation to the extent and timing of any future increases in global temperature.
Greenhouse gases arise from a wide range of sources and their increasing concentration is largely related to the compound effects of increased population, improved living standards and changes in lifestyle. From a current base of 5 billion, the United Nations predicts that the global population may stabilize in the twenty-first century between 8 and 14 billion, with more than 90 percent of the projected increase taking place in the
world’s developing nations. The associated activities to support that growth, particularly to produce the required energy and food, will cause further increases in greenhouse gas emissions. The challenge, therefore, is to attain a sustainable balance between population, economic growth and the environment.
The major greenhouse gas emissions from human activities are carbon dioxide (CO2), methane and njtrous oxide. Chlorofiuorocarbons (CFCs) are the only major contributor to the greenhouse effect that does not occur naturally, coming from such sources as refrigeration, plastics and manufacture. Coal’s total contribution to greenhouse gas emissions is thought to be about 18 percent, with about half of this coming from electricity generation. [br] The proportion of all greenhouse gases created by coal is approximately ______
选项
A、14 percent
B、18 percent
C、27 percent
D、90 percent
答案
B
解析
细节理解题。对应原文最后一段:Coal’s total contribution to greenhouse gas emissions is thought to be aleut IB percent, with about half of this coming from electricity genem fion.答案为B。 contribution n,贡献 generation n.生成,发生,衍生
转载请注明原文地址:https://tihaiku.com/zcyy/3802719.html
相关试题推荐
Coalisexpectedtocontinuetoaccountforalmost27percentoftheworld’
Coalisexpectedtocontinuetoaccountforalmost27percentoftheworld’
Coalisexpectedtocontinuetoaccountforalmost27percentoftheworld’
InformationtechnologyisexpectedtohaveimpactonallthefollowingEXCEPT[b
AccountabilityforEducationFailsIhaveanunclewhow
AccountabilityforEducationFailsIhaveanunclewhow
AccountabilityforEducationFailsIhaveanunclewhow
AccountabilityforEducationFailsIhaveanunclewhow
Thedoctorhadalmostlosthopeatonepoint,butthepatientfinally______.A、p
Wehadn’texpectedapowercutsowewereastonishedwhenthewholehousewas___
随机试题
Goodmorning,ladiesandgentlemen.ItiswithagreatpleasurethatIwelco
HowCanWePreventMedicalErrorsFormorethan20years
Teenagersarespendingmoremoneythanever.Justlastyear,31.6millionte
InhisnewbookCreativeIntelligence,BruceNussbaumarguesthatcreativity
有活血调经、利水功效的药组是A.乳香、红花B.川芎、延胡索C.血竭、自然铜D.水
学校社会工作者小苏在为初二学生小宁进行个案辅导时发现,母亲对小宁控制过于严格,不
艾里克森接受了( )的人格结构说,强调社会文化背景的作用,认为人格发展受文化背
我国《证券法》规定,股份有限公司申请股票上市的条件之一是:向社会公开发行的股份达
甲公司为增值税一般纳税人,2021年度发生的有关交易性金融资产业务如下: (1
关于项目进度目标动态控制的说法,错误的是( )。A.动态控制首选应将目标分解,制
最新回复
(
0
)