A new research on students' sleeping habits says that more than 70% of students do not get enough sleep.

    Researchers found that primary school students get 9 hours and 10 minutes of sleep a night, junior high school students get 8 hours and 6 minutes, and senior high school students get 7 hours and 9 minutes. None of those hours are enough for each group. Not enough sleep can cause many kinds of problems in children and teenagers.

    In 2007, Shanghai Municipal Education Commission asked primary and middle schools in the city to adjust their timetables so that students could get more sleep. Two years later, a research found that students at schools that adjusted their timetables got more sleep than in 2005.

    The researchers hope that the government will take measures to make students have enough sleep. Students in other places may even less sleep than those in Shanghai.

    We always look forward to World Book Day—it's a chance to share our love of books and reading with even more people! Here are some of the activities in different countries and places to celebrate the World Book Day, April 23rd every year.

    School Children's Books

    School Children's Books are happy that best-selling writer Holly Webb is their World Book Day writer for 2012. Holly has written a large number of books for children and she has written a special Magic Molly story just for this year's World Book Day!

    Reading Package

    On the World Book Day, every primary school student in Britain will receive a package from their school. Inside, there is a story book, a beautiful card and a reading list. Besides these three things, they will also receive a special note, which is worth one pound. Children can use it to buy their favorite books. And they can also enjoy a special price-20% cheaper.

    Share of Reading

    It is an interesting on-line activity which is for one week. People can share their opinions of a book on line. There are also many reading-aloud activities in libraries. For example, in 2010's World book Day the former US first lady Michelle Obama read aloud a book called The Cat in The Hat for more than 200 children in a library.

    Information Card

    Different people have different hobbies. Some like growing flowers, some like singing and others like building model ships. I'm interested in stamps and started to collect them in 2008.

    My father works in a big company. He always goes abroad. Eight years ago, when he was working in America, he sent home a letter with a beautiful stamp on the envelope(信封). I liked the stamp very much. From then on I have always asked my father to send me different stamps from different countries. Later I joined a club and I have made many friends there. They helped me learn more about stamps and always traded(交换) stamps with me. And I got some special stamps from them.

    Now I have more than a thousand stamps. When I look through these beautiful stamps, I feel relaxed and happy. I can enjoy the beautiful designs of stamps.

    Almost everyone likes apple pies in the USA. An apple pie is easy to make, so many people make it at home. You just need apples, flour (面粉), sugar, butter and spices(调味品).

    To make an apple pie, first peel and cut the apples into pieces. Then mix them with spices and put them in a pie tin (罐). Next put butter, sugar and flour in. Put the mixture on the apple pieces and bake the pie for about 30 minutes. The smell of the apple pie is great.

    There are many different ways to make apple pies. Some families have their own secret (秘密) ways and don't tell other people about them. Pies made with berries( 浆果) are also very popular in America. But the apple pie perhaps (也许) is the dessert that everyone loves best.