Breakthroughs in science and technology are paving the way for modern cities to support bigger populations. Now, we see the most exciting urban innovations to show you exactly how they’ll improve your city’s infrastructure(基礎(chǔ)設(shè)施).

Lighting Up The Night

Anthony Di Mari dreamed up an electric tree to help irrigate public parks and light them at night. These electric trees contain a special infill (填充物) that collects water from rainfall. The water is then distributed through a shallow underground irrigation system with the help from the trees’ swaying movement. An electric motor turns energy from the waving of the artificial trees into electricity, which is used to light up the trees’ outer LEDs.

Thinking Outside The Box

As more people flock to urban areas, city planners will need to get increasingly creative about how to satisfy residents’ health and transportation needs within decreasing available space. One way to achieve this is by updating infrastructure to support biking and walking by building suspended(懸浮的) roundabouts like hovering in the Netherlands. By lifting bicycle and pedestrian traffic above busy roadways, cities can significantly decrease over-crowded traffic condition.

Waving Hello To Clean Energy

Cities that don’t receive enough sunlight may find an attractive alternative in wave power. Since ocean waves rarely experience disruption(中斷), electric engines driven by their clockwork push-and-pull can reliably provide power throughout the year. Further, thanks to advances in wave power technology, engineers have been able to move wave power engines farther offshore, where the waves pack the most punch, making the engines extremely efficient. So in the future, heavily populated coastal cities may use wave to meet their energy needs.

1.What is the special infill used to do?

A. To make the trees beautiful.

B. To produce electricity.

C. To help the trees’ swaying.

D. To collect water from rainfall.

2.How do the Netherlands improve the city traffic according to the text?

A. By updating the city roadway condition.

B. By building walking passages underground.

C. By creating suspended roundabouts above roadways.

D. By supporting more biking and walking.

3.What does the author mainly tell us in the last paragraph?

A. The advantages of wave power.

B. The ways to use wave power.

C. The future of wave power.

D. The advances in wave power technology.

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Developing ideas in writhing is the greatest

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