Have you seen Avatar? It’s a popular 3D movie, and you may have to wear a special pair of glasses – 3D glasses, to see it. The 3D glasses make the images from the movie look as if they are coming straight at you.
3D movies are really exciting to watch. More and more 3D movies are coming to theaters. Some say that 3D TV sets will come into our homes in the near future. 3D technology can make TV and movies more exciting. However, people with eye problems may get headaches if they spend too much time watching 3D movies. Why?
When we look at an object, each eye sees it at a different angle (角度). Our eyes send the two images to our brain, and the brain puts them together. 3D technology uses two film projectors (投影机)。 One projects left-eye-image and the other projects a right-eye-image. 3D glasses allow us to see a different image in each eye. So, when we are watching a 3D movie, our brain can’t put together the images sent to our eyes. The brain needs to work harder at “reading” the images. That makes it easier for people with eye problems to get dizzy (头晕的) or have headaches.
Dr John Hagan, an eye doctor in Kansas City, said if your eyes can’t focus on the same object at once, you will have trouble watching 3D movies.
小题1:What is Avatar?
A．It’s a kind of 3D projector.
B．It’s a kind of 3D TV set.
C．It’s a movie.
D．It’s an animal.小题2:The 3D glasses can make the images from the movie 。
A．look more beautiful than usual
B．look as if they are coming straight at you
C．look as if they are far away from you
D．look more strange than usual小题3:According to the story, people will have in their homes in the near future.
A．3D computers
B．3D projectors
C．3D phones
D．3D TV sets小题4:When we look at an object, .
A．each eye sees the object at the same angle
B．each eye sees a different object at the same time
C．our brain puts the two different pictures together
D．there will be two film projectors in our eyes小题5:If you wear a pair of 3D glasses, .
A．you will see different images in both eyes
B．you will see the same images in both eyes
C．your brain can’t work at all
D．the images can be put together easily by your brain