Question

 Sometimes something looks different from another thing,but it is usually the same. Sometimes something looks the same as another thing,but it is really different.

Sometimes we cannot believe our eyes. Here is an example. If we are standing in front of an entrance of a tunnel，we can see the other end where we go out. We feel the entrance much bigger than the other end. If we go through the tunnel,we find that the ends are the same size. One is not bigger than the other. They are the same size.

Now let’s turn around and look through the tunnel from the other end. Now we find that the end near us looks bigger. The other end looks smaller. But we know that they are the same size.

Things that are near us seem big. Things that are not near us seem small. We know that one lamp post in the streets is just like another. They are all equally tall. But if an artist draws a picture of a street,he will not make the lamp posts all the same size. He will make the first one big,the second one a little smaller,and the third one a little smaller than the second one. The ones that are the farthest away are the smallest. When things move away,they look smaller. When things come nearer,they look bigger.

1.选择最佳答案。

(   ) 1) A tunnel is usually         .

A. the same size at each end

B. in different sizes at the end

C. bigger at one end than the other end

D. smaller at one end than the other     end

(   ) 2) We can         what we see.

A. always believe     B. not believe at all

C. sometimes not believe     D. be sure

(   ) 3) The lamp-posts in the streets         .

A. are not equally high     B. are all equally high

C. are bigger and bigger     D. are smaller and smaller

(   ) 4) Things that are near         than  things  that are not near.

A. are bigger     B. are smaller

C. seem bigger     D. seem smaller

(   ) 5) When things are moving,they look     .

A. bigger when they come near

B. smaller when they come near

C. bigger when they move away

D. the same size when they move away

2.根据首字母提示补全单词。

1) It seems that the two ends of a tunnel are in d          sizes  when you are in front of the entrance.

2) In fact,one end of a tunnel is as b         as  the  other.

3) Stars in the sky look brighter than the others because they are n         to us.

4) When a plane flies farther,it looks s      .

5) In an artist’s picture,the lamp-post in the streets are not the s          size.

Answer 1

 1. 1) A 2) C 3) B 4) C 5) A

2. 1) different  2) big  3) nearer  4) smaller 5) same