数学北师大版七年级上册有理数的混和运算

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1、关于经典的友谊英语故事:彩虹的故事Green said: Clearly I am the most important. I am the sign of life and of hope. I was chosen for grass, trees and leaves. Look over the countryside and you will see that I am in the majority.Blue interrupted: You only think about the earth, but consider the sky and the sea. It is th

2、e water that is the basis of life. The sky gives space and peace and serenity. Without my peace, you would all be nothing.Yellow chuckled: The sun is yellow, the moon is yellow, the stars are yellow. Every time you look at a sunflower, the whole world starts to smile. Without me there would be no fu

3、n.Orange started next: I carry the most important vitamins. Think of carrots, oranges and mangoes. When I fill the sky at sunrise or sunset, my beauty is so striking that no one gives another thought to any of you.Red could stand it no longer so he shouted out: I am the ruler of all of you. I am blo

4、od一 lifes blood! I bring fire into the blood. I am the color of passion and love.Purple was very tall and spoke with great pomp: I am the color of royalty and power. Kings, chiefs and bishops have always chosen me for I am the sign of authority and wisdom. People do not question me! They listen and

5、obey.Finally Indigo spoke, much more quietly than all the others, but with just as much determination: Think of me. I am the color of silence. I represent thought and reflection, twilight and deep water. You need me for balance and contrast, for prayer and inner peace.And so the colors went on quarr

6、eling, each convinced of his or her own superiority. Suddenly there was a startling flash of bright lightening, and thunder rolled. Rain started to pour down.Rain began to speak: You foolish colors. Dont you know that you were each made for a special purpose? Join hands with one another and come to me.Doing as they were told, the colors joined hands and united.Rain continued: From now on, when it rains, each of you will stretch across the sky in a great bow of color as a reminder that you can all live in peace. The rainbow is a sign of hope for tomorrow.

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