首页
登录
职称英语
[originaltext]Stan: Hi, Camellia. Have you attended Professor Gabriel’s lecture
[originaltext]Stan: Hi, Camellia. Have you attended Professor Gabriel’s lecture
游客
2023-12-17
35
管理
问题
Stan: Hi, Camellia. Have you attended Professor Gabriel’s lecture?
Camellia: No. What was it about?
Start: Energy -- energy future and today.
Camellia: Oh, what a pity. You know, I’m writing a paper on this subject. And I have spent a lot of time collecting materials. I shouldn’t have missed this chance.
Stan: Don’t worry. I made a lot of notes. You can take my notebook and have a look.
Camellia: It’s very kind of you... (open the notebook)... mmm... but it seems... mmm... that you have written hastily and some parts are not...
Stan: That’s true. The lecture is magnificent, so I tried to write down all the things... mmm... never mind. I’m free now and I can tell you what I can remember.
Camellia: Oh, thank you. You’re really a great friend.
Stan: OK. The professor began with the alternative energy. He said there is a great deal of information and enthusiasm about the development and increased production for the global energy needs from alternative energy sources.
Camellia: I know that solar energy, wind power and moving water are all sources of alter native energy.
Stan: And they are progressing. It makes many people believe that our future energy demands will easily be met.
Camellia: It’s not so?
Stan: According to the professor, absolutely not. We often mention alternative energy to refer to those energy that is produced from sources other than our primary energy supply: fossil fuels--coal, oil and natural gas. The problem is, fossil fuels are non-renewable.
Camellia: Yes, you know, fossil fuels were formed from plants and animals that lived hundreds of millions of years ago. So there would be another hundreds of mil lions of years to reproduce.
Stan: They are limited in supply and we have mostly depended on them for our energy needs, from home heating and electricity to fuel for our automobiles and mass transportation. They will one day be used up. There is no escaping this conclusion.
Camellia: How about nuclear energy? Isn’t it a potential source of energy?
Stan: The professor said nuclear energy, which is primarily generated by splitting atoms, only provides 6% of the world’s energy supplies. And it is not likely to be a major source of world energy consumption because of public pressure and the relative dangers associated with unleashing the power of the atom.
Camellia: Did the professor give any information about how much fossil energies provide?
Stan: Let me see… ah, yes, that’s nearly 88% of the world’s energy needs, or about 350 quadrillion British Thermal Units--or BTUs. The total world energy demand is about 400 quadrillion BTUs -- each year. A BTU is roughly equal to the energy and heat generated by a match. Of this amount oil, coal and natural gas supply, oil is the king, providing about 41% of the world’s total energy supplies, or about 164 quadrillion BTUs. Coal provides 24% of the world’s energy, or 96 quadrillion BTUs, and natural gas provides the remaining 22%, or 88 quadrillion BTUs.
Camellia: Just how limited are our fossil fuel reserves?
Stan: Some estimates say our fossil fuel reserves will be used up within 50 years, while others say it will be 100--120 years.
Camellia: It’s terrible. We are going to run out of fossil fuels for energy and we have no choice but to prepare for the new age of energy production since, most certainly, human demands for energy will not decrease.
Stan: Nobody really knows when the last drop of oil, lump of coal or cubic foot of natural gas will be collected from the Earth. All of it will depend on how well we manage our energy demands and how well we can develop and use renewable energy sources.
Camellia: I think the development and use of sun, wind and water is a good way. They are perfect energy sources. They are non-polluting, renewable and efficient. They are simple: all you need. is sunlight, running water and wind.
Stun: But the development takes time. In fact, according to what the professor said, there exists a Fossil Fuel Dilemma. Fossil fuels exist, and they provide a valuable service. The key is not that the use of fossil fuels for energy is problematic, but it’s the side effects of using them that cause all of the problems. Burning fossil fuels creates carbon dioxide, the number one greenhouse gas contributing to global warming. Combustion of these fossil fuels is considered to be the largest contributing factor to the release of greenhouse gases into the atmosphere. In the 20th century, the average temperature of the Earth rose one degree Fahrenheit.
Camellia: Is there any solution?
Stan: At the end of his lectures, I remember, the professor said, "No single Solution can meet our society’s future energy needs. The solution instead will come from a family of various energy technologies that share a common thread m they do not use up our natural resources or destroy our environment."
Camellia: Oh, Stan, you have helped me so much. I think I need to revise some parts of my paper. Oh, thank you so much.
选项
A、mining is difficult
B、it costs a lot of money to preserve
C、they are difficult to be processed
D、they are non-renewable
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3280452.html
相关试题推荐
[originaltext]ItalywillstarttopullitstroopsoutofIraqasplannedin
[originaltext]Charlie’sAngelssentAdamSandler’sdevilishnewcomedytopur
[originaltext]Caracas(dpa)-TheOrganizationofPetroleumExportingCountr
[originaltext]Caracas(dpa)-TheOrganizationofPetroleumExportingCountr
[originaltext]Q:Mr.Chen(Yu-Lun),whatkindofamagazineTheWorldofEnglis
[originaltext]Q:Mr.Chen(Yu-Lun),whatkindofamagazineTheWorldofEnglis
[originaltext]Q:Mr.Chen(Yu-Lun),whatkindofamagazineTheWorldofEnglis
[originaltext]Host:Everylanguagehasaphrasefor"thankyou".It’sasentime
[originaltext]A14-year-oldAmericangirlwasstabbedandkilledinaquiet
[originaltext]SaudiforcesclashedwithsuspectedmilitantsinthecapitalR
随机试题
夜是安静的,然而也是生动的。狗儿活跃起来了,它们悄然无声地沿着院子围墙跑着,不时地停下来支支耳朵,细察来自远近的一切动静,履行保卫主人的职责。鼠儿活跃起
下列关于建筑基地地面坡度的规定,何者正确?( )A.应≥0.3%,≤0.8%
热熔喷涂施工设备按喷涂方式可分为( )。A.低压有气喷涂型 B.高压有气喷涂型
女性,57岁。尿少、高血压5年入院。查体:血压160/110mmHg,眼睑苍白,
弥漫性肺间质纤维化常表现出()A.呼气性呼吸困难 B.吸气性呼吸困难
宫口开大4cm后,10小时宫口尚未开全者称A.潜伏期延长 B.活跃期延长 C
一般成人静脉输液时滴速宜调至A.20~40滴/分 B.30~50滴/分 C.
近年来,人们对网络高等教育的品质信任度越来越高。据一项民意调查显示,某国37%的
公司负债的资本化程度可以由资产负债率来表示。()
A.稽留热 B.间歇热 C.弛张热 D.回归热 E.波状热败血症的热型是
最新回复
(
0
)