One afternoon, Mary and her little brother Tom, were playing hide and seek in the street outside the post office.
Mary had shut her eyes when Tom noticed that the small door of the letter box was left open. The postman had just taken all the letters out and got into the post office. Tom climbed into the letter box and shut the door from the inside. When he knew he couldn't get out, he became very frightened and cried. At the same time Mary was looking for him everywhere. But she could not find him. Then she came back to the letter box again and heard her brother crying in it. She ran to tell the postman at once.
With the help of the postman, Tom got out of the letter box. "Next time, if you want to hide in the letter box, don't forget to put up a stamp on yourself, " said the postman with a smile.
Chen Li is from Boluo, a small town in Huizhou, Guangdong. There were two clean rivers and seven lakes many years ago. There were many bamboos and trees on the mountains. And there were many birds and other small animals in the mountains. There weren't any tall buildings there. This summer holiday, Chen Li went back to Boluo. There is only one river and four big lakes now. There are many tall buildings in this town, but he can't see the small animals in the mountains now. He is a little worried.
No one knows why we sleep, but it's certain that we need to. People who are prevented(阻止) from sleeping begin to suffer obvious(明显的) effects after a few days—they think less clearly, and they fall asleep during the working hours.
There are no rules about sleep. Generally speaking, grown-ups sleep about 7 and a half hours each night and probably more than 60 percent get between seven and eight hours. But perhaps eight percent are quite happy with 5 hours or less, and four percent or so find that they want ten hours or more. If you feel all right, you're probably getting enough sleep. The important thing is not to worry how much other people get—their needs may be different. Exercise doesn't seem to increase the need for sleep—office workers, for example, sleep for about as long as people doing physically active work.
Children sleep more than grown-ups—perhaps 14 to 18 hours soon after birth, going down to grown-up levels by early teenage. Sleep patterns also tend (倾向) to be different in the old people, who may sleep less at night than they did when younger, find sleep getting more broken, and often make it a rule to sleep during the daytime.
Dear Alan,
How do you do? I write to you at school. We go to school from Monday to Friday. There are four classes in the morning and three classes in the afternoon. We usually do homework after school. I have two friends at school. One is from Australia. His name is Mike. The other is from the US. Her name is Linda. They speak Chinese well. I like to play games with my friends. What about you? Please write to me soon!
Yours,
Han Meimei
—She writes to ________.
—________
