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The second little pig was unlucky. He built his house from sticks. It was blown away by a wolf. His brother, by contrast, built a strong house from bricks to prevent the wolf’s attack. However, in the real world it would help reduce pollution and slow global warming if more builders copied the wood-loving second pig.

Governments in the rich world are now trying to promote greener behavior by forcing developers to build new projects to “zero carbon” standards. These standards are less green than they seem. Wind turbines (涡轮) 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 given 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 be made of more recycled wood and parts of them can be prefabricated in off-site factories, greatly reducing truck journeys. But no other building material has environmental certificates as exciting and overlooked as wood. The energy required to produce a wooden beam is one-sixth of that required for a steel one of comparable strength. When a mature tree is cut down, a new one can be planted to replace it, capturing more carbon. After buildings are pulled down, old wooden beams and boards are easy to recycle into new structures. Wood is also a good insulator (隔热材料). A softwood window frame provides nearly 400 times as much insulation as a plain steel and over a thousand times as much as an aluminium (铝) frame.

Carpenters’ efforts alone will not bring the environmental cost of the world’s buildings into line. But using wood can do much more than what is appreciated. Thus, the second little pig was not wrong, just before his time.

1.Why is the story about the pigs mentioned?

A.To bring up the topic of the text.

B.To prove the author’s argument.

C.To offer background information.

D.To inspire the readers’ imagination.

2.What can we know about the “zero carbon” standards?

A.It’s impossible to make them come true.

B.They don’t mean no carbon is given out.

C.They are only fit for developed countries.

D.It’s easy for them to meet today’s needs.

3.What is paragraph 3 mainly about?

A.The ways of making buildings greener.

B.The usage of recycled steel in buildings.

C.The findings of new research about wood.

D.The advantages of wood as building materials.

4.Which can replace the underlined word “prefabricated” in paragraph 3?

A.Registered. B.Recycled.

C.Constructed. D.Compared.

高三英语阅读理解困难题

少年,再来一题如何?
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