B

Have you ever seen a rainbow(彩虹) ? How beautiful it is!

It’s said that whenever you see a rainbow you should run at once to the place where it touches the ground, and there you would find gold. Of course it is not true, You could not find the gold or its end. No matter how far you run, it always seems far away.

A rainbow is not a thing which we can feel with our hands as we can feel a flower. It is only the effect of light shining on raindrops, The raindrops catch the sunlight and break it up into all the wonderful colors which we see. It is called a rainbow perhaps because it is made up of raindrops and looks like a bow (弓).

That is why we can never see a rainbow in a clear sky. We see a rainbow only when there is rain in the air and the sun is shining brightly through the clouds.

Every rainbow has many colors in the same order. The first or the top color is always red, and the next comes orange, then yellow, and last of all, blue. A rainbow is indeed one of the wonders of nature.

54. We can not feel            with our hands.

A. gold              B. a flower              C. water            D. a rainbow

55. We can see a rainbow            .

A. when it is cloudy

B. when it is snowing

C. when it is raining heavily

D. when there is rain and sunshine

56. From the text, we can know that            .

A. a rainbow is the effect of light shining on raindrops

B. we can see a rainbow in a clear sky

C. every rainbow has many colors in different orders

D. the first color of rainbow is always orange

57. The best title of this passage is            .

A. Rainbow---the Wonder of Nature              B. The Colors of Rainbow

C. Raindrops and Bow                          D. The Shape of Rainbow