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 are 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 make 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 the 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 *projectors. 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 reasons is the 3-D glasses makes 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.Paragraph 3 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-D films or TV

2.When we watch a 2-D film, each of our eyes get ________ information.

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

3.Which is the following is right according to the passage?

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

B．The 3-D technology is based 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-D films? 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

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 are 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 make 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 the 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 *projectors. 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 reasons is the 3-D glasses makes 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.  
【小题1】Paragraph 3 mainly tells us __________.

Animals, including insects, don’t have a ‘language’ like ours. They do not ‘talk’ to each other in words and sentences. But if we watch them, we can see that they do have their ways of communicating (交流) with each other.

Can you see the rabbit’s tail? When rabbits see this white tail moving up and down, they run away. They know that they are in danger. The rabbit has told them something without making a sound. It has given them a signal.

Many other animals use this kind of ‘language’. When a cobra（眼镜蛇）is angry, it raises its head and makes itself look powerful（有力的）. This warns other animals. When a bee（蜜蜂）has found food, it goes back to its home. It cannot ‘tell’ the other bees where the food is by speaking to them, but it does a little dance. This tells the bees where the food is.

Some animals ‘say’ things by making sounds. A dog barks, for example, when a stranger comes near. A cat purrs when it is pleased. Some birds make several different sounds, each with its own meaning. Sometimes we human beings speak in the same way. We make sounds like “Oh” or “Ah” when we are frightened or pleased or when we drop something on our toes.

1.Which one is TRUE according to the passage?

A．Animals have languages like human beings.

B．Bees communicate with each other by dancing.

C．Animals can use words.                                                 D．Animals are brave.

2.A rabbit uses its tail to ___________.

A．warn other rabbits when they are in danger   B．tell other rabbits where food is

C．make itself look powerful                 D．help it to run fast

3.When a cobra is angry, it __________.

A．makes a loud noise                      B．raises its head

C．moves up and down                     D．does a little dance

4.Several different sounds can be made by a __________.

A．rabbit            B．bee              C．bird              D．fish

5.From the passage, we know that ________ use words and sentences to express ideas and thoughts.

A．all living things      B．all animals         C．some birds        D．human beings

Animals, including insects, don’t have a ‘language’ like ours. They do not ‘talk’ to each other in words and sentences. But if we watch them, we can see that they do have their ways of communicating (交流) with each other.
Can you see the rabbit’s tail? When rabbits see this white tail moving up and down, they run away. They know that they are in danger. The rabbit has told them something without making a sound. It has given them a signal.
Many other animals use this kind of ‘language’. When a cobra（眼镜蛇）is angry, it raises its head and makes itself look powerful（有力的）. This warns other animals. When a bee（蜜蜂）has found food, it goes back to its home. It cannot ‘tell’ the other bees where the food is by speaking to them, but it does a little dance. This tells the bees where the food is.
Some animals ‘say’ things by making sounds. A dog barks, for example, when a stranger comes near. A cat purrs when it is pleased. Some birds make several different sounds, each with its own meaning. Sometimes we human beings speak in the same way. We make sounds like “Oh” or “Ah” when we are frightened or pleased or when we drop something on our toes.
【小题1】Which one is TRUE according to the passage?