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Before the end of the year, employees at Ubiquitous Energy, a company in Redwood City, Calif, will gather in a window-lined conference room to stare toward the future. That’s because their new glass windows will offer more than an amazing view of the North California landscape. They will also be able to power the company’s lights, computers and air conditioners.

Several years in the making, Ubiquitous’ energy-producing glass is a remarkable technological achievement. Its power lies in the layers of organic polymers (聚合物) between sheets of glass. As light enters the window,the flow of electrons between the polymer layers creates an electric current, which is then collected by tiny wires in the glass.

“It’s sort of like a transparent computer display run in reverse (反过来),” says Veeral Hardev, director of business development at Ubiquitous Energy. “Instead of electricity being shuttled to different points in a display to light them up, light is producing electricity to be shuttled out of different points in the window.”

Right now the windows produce about a third as much electricity from a given amount of sunlight as the typical solar cells used in roof panels (板).These windows, about half as transparent as ordinary glass, don’t work as well as transparent ones. Hardev says the company is likely to improve the transparency significantly. As for the lower output of electricity, he notes that windows can cover a much greater surface area than a roof, so numerous windows will produce a surprisingly larger amount of electricity than the production from a rooftop full of higher-efficiency solar panels. “You could do both.” says Hardev. “But you’ll get more from the windows. The biggest challenge, he adds, is increasing the windows from less than two square feet currently to about 50 square feet.”

1.What makes the new glass windows special?

A.They can offer an amazing view.

B.They are controlled by computers.

C.They can power the conference room.

D.They can help stare toward the future.

2.What is Hardev trying to explain in Paragraph 3?

A.The source of light.

B.The significance of different points.

C.The similarity of computer and glass.

D.The working principle of energy-producing glass.

3.What can affect power production according to the passage?

A.The transparency of the glass.

B.The quality of the rooftop.

C.The height of the solar panels.

D.The thickness of the glass.

4.Which of the following is the best title for the passage?

A.Windows: A New Challenge of Technology

B.Windows: No Longer Just for Letting in the Light

C.Power: A Pressing Problem in the Near Future

D.Power: Not Enough from Rooftop Solar Panels

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