It's the end of class. When the bell rings, students of Luohu Foreign Languages School in Shenzhen quickly take out their cell phones. They want to log on to their micro blogs to check the interesting things that have happened in the last hour.
　　Since last year, the trend of micro blogging has swept the country. Recent surveys shows that most students in middle schools have a micro blog and some even update their blogs over five times per day.
　　"We learn many fresh and interesting things on micro blogs and they have become popular topics in class," said Andy Liang, 14. "If you do not know about them, you are out of the loop."
　　It is also a great place for students to let out stress. "My parents always ask me to study all the time, and encourage me before exams, but it really adds pressure," said Simon Zhang, 15. "When I share these feelings on my micro blog, I get many replies from friends in the same situation, which makes me feel better."
　　But parents are worried that micro blogging could be a waste of time. Some misleading messages may even cause danger to kids, they said.
　　Mr. Shen, a professor at the China Education Association, suggests parents not worry too much as long as kids are not crazy about micro blogging. Maybe it can become a window for parents to understand their children. "If parents can read their children's micro blogs, they'll know their thoughts, thus leading to better communication and solutions to problems," he said. He also gives some tips for kids.
　　—Don't micro blog for more than one hour a day.
　　—Never micro blog in class.
　　—Try to talk face to face with people from time to time.
　　—Be critical. Don't trust all the messages on a micro blog.

    Adam and his parents buy things in different ways. Adam likes shopping on the Internet on weekends. http: /club. 360 buy. com is his favourite website(网站). He often buys things such as mobile phones(手机)and cameras(照相机)on it He spends about two hundred yuan buying things on it each month. It often takes him three days to get his products.

    But Adam's parents never shop on the Internet. They can't see the real products (产品)and they often worry. Adam's mother likes buying clothes but she can't try them on(试穿) if she buys the clothes on the Internet. So she often goes shopping with her husband(丈夫). There are some shops near their home, so Adam's parents often go there to shop.

Today more and more people travel around China by high-speed train. We know that China wasn't an early starter in the high-speed rail field. Japan started half a century ago, and Ger-many did 22 years ago. But China has the largest high-speed railway system (系统) in the world. Here are some advantages of China high—speed trains.

First, China high-speed trains do well in speed. For example, the G3 train from Beijing to Shanghai only takes 4 hours and 48 minutes. But a normal-speed train takes more than 15 hours. The travel time between main cities in China has already been reduced.

Second, it's handy for you to book or cancel tickets. There are many high speed trains running during the day, especially between popular cities. You can choose your favorite one according to your plan. It's easy to cancel or change, if necessary.

As we know, airplanes and normal speed trains sometimes will not arrive on time. But high-speed trains always arrive at station on time. This type of trains are less affected (影响) by weather conditions or traffic control.

Moreover, traveling by high-speed train can make your trip more comfortable. You can enjoy nearly the same service as airplane. You can even walk around on a train and use the Internet on a high-speed train.

According to these advantages, the high-speed railways bridge the distance between people. It greatly develops people's lives.

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