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A new device is helping those who are blind to see. It does this in a new way by helping them experience the world around them. The technology is called Orion, manufactured by a company called Second Sight. 1. From being able to see absolutely nothing to suddenly seeing little flickers of light, the blind can move around alone, telling where a doorway is and where the sidewalk begins or ends.

2. One is a small device placed in the brain. There is also a video camera on sunglasses and a processing device carried in a person’s clothes. When the user points the camera, a signal goes to the processor and then back to the glasses. The glasses then communicate wirelessly with the device in the brain. The information causes a pattern to develop in the part of the brain called the visual cortex (皮质). 3. And it all happens in seconds.

Jason Esterhuizen is one of just two people in the U.S. testing this technology. He lost his eyesight after a car accident. He never thought he would be able to see light or movement again. But with the movement of a switch, his world suddenly grows brighter. 4.For example, it is easier and safer for him to cross the road because he can look down and just follow the white line that's painted on the road.

Researchers believe that one day this technology could benefit people who have lost their vision because of illnesses like glaucoma (青光眼) or diabetes. 5.

A.It may also help those with poor vision or who were born blind.

B.The new technology generally uses several parts.

C.He is amazed to have the functional vision again.

D.It is meant to help these people regain some independence.

E.He can do everyday activities that he once could not.

F.In this way, users detect movements and shapes of light.

G.It basically performs the functions of what the eye normally does.

高三英语七选五中等难度题

少年,再来一题如何?
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