Look at the centre circles of Diagram (图)A and Diagram B. Which of the centre circles looks larger? In fact, they are exactly the same size.

Then look at the picture on the right. What do you see? A vase? Or two faces？Does the picture change quickly from one to the other again and again? Maybe or maybe not, but you can never see them at the same time.

    “What’s happening? Is something wrong with my eyes?” You may wonder at what you see. Don’t worry. Here is how it goes:

    When we look at things, our eyes send messages to our brains and then our brains interpret（解读）the information. However, sometimes our brains interpret the received information in a wrong way. It seems that our eyes are playing a joke on us. This often happens and we call it “visual illusion(视觉错误)”.

Movie makers often make use of visual illusions. They make the objects around actors much smaller or bigger than usual. This makes us believe that the actors are much larger or smaller than they usually are. The movies Jurassic Park and Honey I shrunk the kids just make use of visual illusions.

【小题1 】Why does the centre circle in Diagram A look smaller than that in Diagram B?

A. something is wrong with our eyes

B. the two circles are not the same size

C. our brains interpret the information in a wrong way

D. the two pictures change quickly from one to the other

【小题2 】 What do movie makers make use of visual illusions for ?

A. To help the actors look better

B. To make the actors much braver

C. To help the actors become stronger

D. To make the actors seem different in size

【小题 3】In the picture below, it seems that Line AB is shorter than Line CD, but in fact Line AB is as long as Line CD.

Which paragraph can explain what has happened to our eyes?

A. The second one.

B. The third one.

C. The fourth one.

D. The sixth one.

【小题 4】 What’s the right order according to the passage?

    a. We look at things with our eyes.

    b. Our brains interpret the messages.

    c. Our brains tell us what we have seen.

    d. Our eyes send messages to our brains.

    A. a d b c          B. c a b d        C. a c d b      D. b c a d

【小题 5】Where may this passage be from?

        A. A letter                         B. An English newspaper

        C. A science book               D. An advertisement

Look at the centre circles of Diagram (图)A and Diagram B. Which of the centre circles looks larger? In fact, they are exactly the same size.
Then look at the picture on the right. What do you see? A vase? Or two faces？Does the picture change quickly from one to the other again and again? Maybe or maybe not, but you can never see them at the same time.
“What’s happening? Is something wrong with my eyes?” You may wonder at what you see. Don’t worry. Here is how it goes:
When we look at things, our eyes send messages to our brains and then our brains interpret（解读）the information. However, sometimes our brains interpret the received information in a wrong way. It seems that our eyes are playing a joke on us. This often happens and we call it “visual illusion(视觉错误)”.
Movie makers often make use of visual illusions. They make the objects around actors much smaller or bigger than usual. This makes us believe that the actors are much larger or smaller than they usually are. The movies Jurassic Park and Honey I shrunk the kids just make use of visual illusions.
【小题1】Why does the centre circle in Diagram A look smaller than that in Diagram B?

Look at the center circles of Diagram (图) A and Diagram B.  Which of the centre circles looks larger? 
Take a first look and you probably think that the centre circle in Diagram A is smaller than that in Diagram B. In fact , they are exactly the same size.
Then look at the picture on the right. What do you see? A vase ? Or two faces? Does the picture change quickly from one to the other again and again? Maybe or maybe not, but you can never see them at the same time. 
"What's happening? Is something wrong with my eyes?" You may wonder at what you see. Don't worry. Here is how it goes:
When we look at things, our eyes send messages to our brains and then our brains interpret (解读) the information. However, sometimes our brains interpret the received information in a wrong way. It seems that our eyes are playing a joke on us. This often happens and we call it "Visual illusion" (视觉错误). 
Movie makers often make use of illusions. They make the objects around actors much smaller or bigger than usual. This makes us believe that the actors are much larger or smaller than they usually are. The movies Jurassic Park and Honey I shrunk the kids just make use of illusions.
【小题1】The centre circle in Diagram A looks smaller than that in Diagram B. That's because           .
A. something is wrong with our eyes
B. the two circles are not the same size
C. our brains interpret the information in a wrong way
D. the two pictures change quickly from one to the other
【小题2】What's the right order according to the passage?
a. We look at things with our eyes.              b. Our brains interpret the messages.
c. Our brains tell us what we have seen.      d. Our eyes send messages to our brains.

These days, many students like playing 3D games. Do you know what 3D games are like? In most 3D games, game players need to control (控制) a character. The character can be a robot or a soldier (士兵). Game players usually use the mouse to make the character move around in his own world. Game players can find things such as food and weapons (武器) to help them go on with the game. The character can go straight, sit down, turn left, turn right or pick up things in the game.

Some 3D games have many levels (等级). The character needs to finish different goals for each level.Game players can play against their computers, and sometimes they can play with other players on-line. It's great fun to play 3D games. But playing 3D games for long is not good for our study.

1.In most3D games, game players need to _________.

A．control a character                      B．find a robot

C．act as a soldier                         D．control the computer

2.How do game players make the character move around?

A．By using the keyboard

B．By using the mouse

C．By telling the directions

D．By moving the computer.

3.In the game, the character can _________.

A．go straight and sit down

B．turn left and turn right

C．Pick up things

D．A, B and C

4.Which of the following is NOT true according to the passage?

A．Some 3D games have many levels.

B．The character needs to finish different goals for each level.

C．Game players can only play against their computers.

D．Game players can go on-line and play with other players together.

5.What is the writer's opinion (观点)？

A．He doesn't think it's very interesting to play 3D games.

B．He thinks playing 3D games is really boring.

C．He thinks all the students should learn to play 3D games.

D．He thinks playing 3D games for long is not good for our study.