阅读理解。
Long, long ago, seven colors were arguing about who was the most important color.
Red said, "I am the ruler of all of you. I represent blood-life's blood! Without me, the world would be
empty." Orange said,"I am the color of health and strength. I am so beautiful that no one can think of any
of you." Yellow said, "I bring laughter and warmth into the world. Without me, there would be no fun."
Green said, "I am the most important. I am the sign of life and hope. Without me, all animals would die."
Blue said,"You only think about the earth, but forget the sky and the sea. Water is the basis of life. Without
me, you all would be nothing." Purple said,"I am the color of royalty, power and wisdom. People usually
listen to me." Indigo (靛蓝) finally said, "Don't forget me! I am the color of silence. You need me for balance."
Suddenly, it started to rain. The colors were afraid and came close to one another. The rain saw this and
said,"You foolish colors, don't quarrel (争吵) any more. Join hands with one another and come to me."Doing
as they were told, the colors united and joined hands. A beautiful rainbow appeared in the sky. The rain said,
"The rainbow is a sign of hope for tomorrow. Let us remember today and appreciate (欣赏) one another."
1. Of all the ___________ colors, everyone wanted to be the most __________ one.
2. Red thought there would be ___________ in the world ___________ him.
3. ___________ thought he himself was the color of ___________ and happiness.
4. In the end the rain ___________ the colors ___________ quarrelling.
5. From the story, we can learn that we should ___________ together and ___________ and enjoy the
good qualities of each other.
CuSO4＋SO2↑+2H2O