The fight is on to get rid of air pollution in our cities.While the best solution in the long-term would be to ban fossil-fueled cars，that won't help the millions who are dying in the meantime，and so some high-tech solutions are now on the cards.
In March 2016，10 London pigeons became famous.These pigeons took to the sky from Primrose Hill in north London，wearing backpacks monitoring air pollution.Once in the air，the backpacks sent live air-quality updates to the smartphones of the Londoners below.
The pigeons and their backpacks were just the latest in a series of increasingly desperate attempts to monitor and control air pollution.London's air pollution problem has been getting worse for years，and it often rises to more than three times the European Union's legal limit.
Another promising approach can be found in Beijing，after China declared a "war against pollution" in 2014.A seven-metre-high"Smog Free Tower"，designed by a Dutch scientist，Daan Roosegaarde，opened in Beijing's 751 D Park in September 2016.
It is a huge，outdoor air purifier.Airborne particles（顆粒）are sucked into the tower where they receive a positive charge.The particles are then caught by a negatively charged dust-removal plate and clean air is blown out of the other end. "Changing smog particles does not take much current."Roosegaarde said.
As for what to do with the collected PM waste，he has currently set up a business making jewellery out of the waste.Prince Charles owns a set of "smog free" cufflinks （袖扣）.If collected on at a big scale，Roosegaarde believes it could even be used as a building material.
Mexico City has an alternative solution.Looking to Nature to maximize the surface area of a building，Allison Dring，a Berlin-based architect，managed to catch light and wind from all sides.She is now making a building material by burning agricultural crop by-products in the absence of oxygen. "It means that you are actually taking carbon（碳） out of the sky，transforming it into a material，and then using it to build，"says Dring.
The fight against outdoor air pollution is really just starting.Even if none of the ideas take off，at least Prince Charles' cuflinks，the special building surface and pigeons wearing back-packs will have brought the issue more to the public's attention.
（1）The underlined words "on the cards" in para.1 probably mean CC.
A．hardly to achieve
B．widely questioned
C．very likely to happen
D．publicly welcomed
（2）The ten pigeons in London were used to AA.
A．monitor air pollution
B．warn Londoners
C．update weather forecast
D．promote backpacks
（3）What can we learn about the Smog Free Tower？ CC
A．It can catch light and wind.
B．Its power consumption is high.
C．PM waste from it can be reused.
D．It is the first air purifier in the world.
（4）Which of the following shows the structure of the passage？ BB
A．
B．
C．
D．
【答案】C；A；C；B
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：5引用：1難度：0.5
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