Question

The London Olympic Games are coming soon. This summer, Chinese sports fans will be able to watch the exciting games in 3-D on CCTV.

When you watch 3-D movies or TV, you have to wear a special pair of glasses. The 3-D glasses make the people and the things on the screen look like they are in the room with you.

3-D, means having three dimensions*: width*, height and depth*. 3-D technology is based on the way the human brain and eye work. Because the pupils of a person’s eyes about 6.5cm apart, when we look at something, each eye sees it from different angle*. Our eyes send the two pictures to our brain, and the brain puts them together. The small difference between the picture from the right eye and the picture from the left eye makes us see depth.

While watching 2-D films, we don’t have to wear the special glasses. We see the pictures in two dimensions, each eye get same information. This is because there is only one way of watching it.

So the aim of 3-D technology is to get a different picture into each eye of the person. It uses two film projects. One projects a left eye picture and the other projects a right eye picture. When we are in the cinema, we can see different pictures in each eye at the same time with the help of the 3-D glasses.

While watching 3-D films, we feel that we are actually in the same environment as the things we are watching. However, some people are against watching 3-D films. One of the reason is the 3-D glasses make the screen of the film or TV look darker. It is bad for eyes. What’s more, people with eye problems may get headaches if they spend too much time watching 3-D movies, because their brains need to work harder to “read” the pictures.

1.The third paragraph mainly tells us _____________.

A. how we see things in 3-D

B. how we watch the Olympic Games

C. how 3-D films are made

D. where we watch 3-Dfilms or TV

2.When we watch a 2-D film, each of our eyes gets ______ information.

A. no      B. different     C. dark     D. the same

3.Which of the following is TRUE according to the passage?

A. We don’t have to wear 3-Dglasses if we watch games in 3-D on TV.

B. The 3-D technology is depended on the way the human ear and eye work.

C. All the people can have fun watching 3-D movies or TV for a long time.

D. 3-D glasses make us see different pictures in each eye at the same time.

4.Why are some people against watching 3-Dfilms? Because ________.

A.they make them more excited or sadder.

B.3-D glasses make the screen look darker.

C.3-D films make all people get headaches.

D.They dislike watching the Olympic Games.

Answer

1.A

2.D

3.D

4.B

【解析】

试题分析：本文介绍了3D电影。3D意味着三个纬度：宽度、高度和深度，3D技术根据人脑和眼睛的运转方式来制作的。带着3D眼镜看电影时，我们同时看到不同的画面，我们会感到身临其境。但是有人反对3D电影，因为3D眼镜使电影或电视的屏幕看起来更黑，这对眼睛不好。

1. technology is based on the way the human brain and eye work可知3D技术根据人脑和眼睛的运转方式来制作的，因此本段主要介绍了3D的制作方式，故选A。

2. watching 2-D films, we don’t have to wear the special glasses. We see the pictures in two dimensions, each eye get same information.可知当我们看2D电影时，我们每只眼睛得到同样的信息。故选D。

3. 根据When we are in the cinema, we can see different pictures in each eye at the same time with the help of the 3-D glasses.可知3D眼镜使我们同时看到不同的画面。故选D。

4. of the reason is the 3-D glasses make the screen of the film or TV look darker.可知人们反对3D眼镜的原因是3D眼镜使电影或电视的屏幕看起来更黑。故选B。

考点：科普环保类短文阅读。