When Mary Smith was a 1, she wanted to be a teacher. 2 she liked children.

    When she was twenty, she began teaching in a small school. She was a good teacher, and she 3 a lot with the children in her class. They 4 her teaching.

    One day 5 of the girls in her class said to her, "Miss Smith, 6 does a man's hair become grey before his beard（胡子）does?

    Mary laughed and answered, "I don't know. Helen, do you know?"

     "I don't know either, Miss Smith," said Helen. "But it happened to my father." The 7 children in the class laughed when they heard this.

    Then a boy said, "I 8 , Miss Smith! A man's hair becomes grey 9 because it's sixteen years10 than his beard."

The Sun

     There is nothing more important to life than the sun. Without the sun all living things on the Earth would die.

     The sun is a star. In the sky there are thousands of stars like the sun.

     They are as large as the sun and as hot as the sun. At night you can see many stars, but in the daytime you can only see one star-the sun.

     The sun is much nearer to us than any other stars. That is why it looks like the biggest and brightest of all the stars. The distance of the sun from the Earth is as much as 150 million kilometres. Most of the stars are thousands of light years away from the Earth.

—I sleep five hours a night.