首页
登录
职称英语
The second little pig was unlucky. He built his house from sticks. It was bl
The second little pig was unlucky. He built his house from sticks. It was bl
游客
2023-12-25
60
管理
问题
The second little pig was unlucky. He built his house from sticks. It was blown away by a huffing, puffing wolf, which promptly gobbled him up. His brother, by contrast, built a wolf- proof house from bricks. The fairy tale could have been written by a
flack
for the construction industry, which strongly favours brick, concrete and steel. However, in the real world it would help reduce pollution and slow global warming if more builders copied the wood-loving second pig.
In 2015 world leaders meeting in Paris agreed to move towards zero net greenhouse-gas emissions in the second half of this century. That is a
tall order
, and the building industry makes it even taller. Cement-making alone produces 6% of the world’s carbon emissions. Steel, half of which goes into buildings, accounts for another 8%. If you factor in all of the energy that goes into lighting, heating and cooling homes and offices, the world’s buildings start to look like a giant environmental problem.
Governments in the rich world are now trying to promote greener behaviour by obliging developers to build new projects to "zero carbon" standards. From January 1st 2019 all new public-sector buildings in the European Union must be built to "nearly zero-energy" standards. All other types of buildings will follow in January 2021. Governments in eight further countries are being lobbied to introduce a similar policy.
These standards are less green than they seem. Wind turbines and solar panels on top of buildings look good but are much less productive than wind and solar farms. And the standards only count the emissions from running a building, not those belched out when it was made.
Those
are thought to account for between 30% and 60% of the total over a structure’s lifetime.
Buildings can become greener. They can use more recycled steel and can be prefabricated in off-site factories, greatly reducing lorry journeys. But no other building material has environmental credentials as exciting and overlooked as wood.
The energy required to produce a laminated wooden beam is one-sixth of that required for a steel one of comparable strength. As trees take carbon out of the atmosphere when growing, wooden buildings contribute to negative emissions by storing the stuff. When a mature tree is cut down, a new one can be planted to replace it, capturing more carbon. After buildings are demolished, old beams and panels are easy to recycle into new structures. And for retrofitting older buildings to be more energy efficient, wood is a good insulator. A softwood window frame provides nearly 400 times as much insulation as a plain steel one of the same thickness and over a thousand times as much as an aluminum equivalent.
A race is on to build the world’s tallest fully wooden skyscraper. But such edifices are still uncommon. Industry fragmentation, vicious competition for contracts and low profit margins mean that most building firms have little money to invest in greener construction methods beyond what regulation dictates.
Governments can help nudge the industry to use more wood, particularly in the public sector—the construction industry’s biggest client. That would help wood-building specialists achieve greater scale and lower costs. Zero-carbon building regulations should be altered to take account of the emissions that are embodied in materials. This would favour wood as well as innovative ways of producing other materials.
Construction codes could be tweaked to make building with wood easier. Here the direction of travel is wrong. Britain, for instance, is banning the use of timber on the outside of tall buildings after 72 people died in a tower fire in London in 2017. That is a nonsense.
Grenfell Tower was covered in aluminum and plastic, not wood. Modern cross-laminated timber panels perform better in fire tests than steel ones do.
Carpentry alone will not bring the environmental cost of the world’s buildings into line. But using wood can do much more than is appreciated. The second little pig was not wrong, just before his time.
(选自《经济学人》2019年1月5日) [br] Which of the following can be the title of this passage?
选项
A、Buildings Produce Carbon Emissions
B、Zero Carbon Standards
C、Using More Wood Would Be Greener
D、Carbon Emission Reduction
答案
C
解析
主旨题。全文围绕多使用木材建房更加环保这一主题展开,故C最适合作文章标题。
转载请注明原文地址:https://tihaiku.com/zcyy/3303659.html
相关试题推荐
Ourprogramscomesecondtotheirs.A、comesecondafterB、aresecondonlytoC、ar
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,such
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,such
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,such
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,such
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,such
TinyTim,acharacterinAChristmasCarol,wasahappylittleboyinspiteoft
Manypuremetalshavelittleusebecausetheyaretoosoft,rusttooeasily,or
It’shightimemenstoppedtoregardwomentobesecondclasscitizens,whoinr
Inthepast,the______ofdataoveralongdistanceinsecondsseemedimpossible,
随机试题
注入对比剂后,下列器官增强效应最明显的为A.肝 B.胆 C.胰 D.脾
如图所示,下面说法正确的是()。 A.图中使用了“修订”模式,将“残余”修
填入画横线部分最恰当的一组是 一天顺手拿起手机翻看通讯录,发现里面存储的600
“当机立断”描述的是性格的()特征。A.态度 B.意志 C.情绪 D.理智
降职一般是企业对工作多年的( )采取的一种组织人事措施。A.技术人员 B.老
相对于普通股,优先股的特征有()。A.股息率固定 B.一般无表决权 C.剩余
通常情况下,资金市场利率指到期期限为()内的借贷利率,是一组资金市场利率的期限
根据侵权法律制度规定,从事高度危险作业造成他人损害的,适用的归责原则是()。A
黄金收购量大于销售量,基础货币量()。A、减少 B、不变 C、增加
患者男性,19岁,发热5天伴食欲缺乏2天急诊。检查:血压114/70mmHg,左
最新回复
(
0
)