题目内容：

On sunny days we can see the sun in the sky. It looks like a hot and bright plate. But it is a ball. It is much bigger and hotter than any fire. And it is much brighter than all the lights in the world.

    The sun is a star but it looks much bigger and brighter than any other star. Many stars are much bigger than the sun. The sun is much nearer to us, so it looks much bigger.

    At night we can see the moon and many stars. The moon is a round ball. It is much smaller than the stars. The stars are much farther away from us; so thy look much smaller than the moon. The moon has no light of its own. When the sun shines on it, it looks bright. When the moon is full. It looks very beautiful.

1.Why does the sun look bigger than any other star?

A. Because it is bigger than any other star.      

B. Because it is hotter than any other star.

C. Because it is brighter than any other star.    

D. Because it is nearer to us.

2. Which is the nearest to us?

A. The moon.        B. The sun.         C. The stars.

3.Why do the stars look smaller than the moon?

A. Because the stars are smaller than the moon.  

B. Because the stars are nearer to us.

C. Because the stars are farther away from us. 

D. Because the stars are bigger than the moon.

4. Why does the moon look bright?

A. Because it is bright.                

B. Because it has light of its own.

C. Because the stars shine on it.       

D. Because the sun shines on it.

5.Which one is not right?

A. The sun looks like a bright plate.    

B. Many stars are bigger than the sun.

C. The moon is smaller than the stars. 

D. The moon has light of it’s own.