Peking Opera (Beijing Opera), is one of the oldest forms of dramas(戏剧) in the world. The roles(角色) in it were Sheng, Dan, Jing, Mo, Chou, Wuhang, and Longtao during its early age. But with the change of Peking Opera, there are four main roles in it today: Sheng, Dan, Jing and Chou.

    Sheng——Men Roles

    Sheng are the men roles in Peking Opera, which can be divided into Laosheng, Wusheng, Xiaosheng and Wawasheng.

    Laosheng are middle-aged or older men who are honest. Hongsheng,a type of Laosheng, have a red face. There are only two roles famous as Hongsheng. One is Guan Gong and the other is Zhao Kuangyin. Wusheng are young generals(将军) who are good at martial arts(武术). Xiaosheng are clean-shaven(没有胡须的) and handsome. Wawasheng are children's parts.

    Dan——women Roles

    Dan are women roles that can be divided into different types——Laodan, Qingyi, Huadan, Wudan and Caidan.

    Laodan play old and clever women. Qingyi are the main women roles. Huashan, a type of Qingyi, was created by Mei Lanfang, who played an important role in shaping Peking Opera. Huadan are lively and unmarried women roles. Wudan characters are women, good at martial arts. Caidan are clowns(小丑) in funny plays.

    Jing——Painted Face Men Roles

    A Jing role is an important man character with striking(吸引人的) looks and high social position. The main types of Jing are Tongchui, good at singing and usually a general; Jiazi, good at acting with less singing; and Wujing, a martial arts and acrobatics(杂技) role.

    Chou——Comedy Roles

    Chou are comedy(喜剧) roles in Peking Opera. There are Wenchou who speak, act and sing, and Wuchou who both speak and fight. What makes this type of role special is a small patch(块) of white chalk around the nose. One of the famous roles is the Monkey King, who has a special position in the hearts of all who are interested in Chinese opera.

    What time of day can you think most quickly? Are you a morning person?" Or does it take you a few hours to get your brain going? A lot of recent research suggests that we should pay attention to our body clock. It can tell us what time of day we can perform best at.

    Many people work best later in the morning. This is because the body's temperature takes time to rise through the day. Taking a warm shower when you wake up can help your body's temperature rise quickly.

    But everyone's body clock is different and some are special. Morning people will get up early and work better early in the day." Evening people will work later, but work better towards the end of the day.

    Research shows that we're better at some activities at certain times of the day." Physical performance is at its best between 3p. m. and 6p.- m.-,- so it's better to exercise later in the day.

    Between noon and'4p. m. , people begin to pay less attention. This is because we think less quickly after, a big meal. Research also shows we become sleepy around 2 p.m. This is why people in Spain take a short sleep in early afternoon.

    Finally'it is best to eat when we' re active. This allows our body to burn calories (卡路里) better and stops our blood sugar levels from getting too high.

The weather is getting hotter and hotter. You are thirsty playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health.

There are plenty of "energy drinks" advertisement on TV. Most of them have beautiful colors and cool names. They tell you they are helpful to your health. Sounds great and lots of people believe them!

But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But he careful not to drink too much.

Caffeine makes your heart beat fast. Because of this, the International Olympic Committee has limited (限制) its use. Caffeine in most energy drinks is as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.

In the eyes of many foreigners, Chinese are the best hosts and the worst guests in the world. They're not really bad guests but because the guest-host relationship in China is much different than in some Western countries it appears they are not nice guests. And Western guests sometimes look rude in the eyes of Chinese guests.  

　　In China guests are almost like gods. Whenever I enter a Chinese person's home there is always fruit on the table for me and someone is quick to bring me a cup of tea or water. In the West generally the guest is not a god. Acting according to the host's way of doing things is usual behaviour for a guest. 

　　My wife's mother is a very kind elderly Chinese lady who doesn't smoke. When I see some of her guests smoking in her house, as a non-smoker I feel unhappy. Usually I want to stop them directly but I must realize that she must not do that. In most North America homes if you are a guest and the hosts are not smokers, you should not smoke in their house. At the very least you could ask "Is it OK if I smoke?" But don't be surprised if they say "No, you can't smoke." In our culture if you smoke in their home you are a bad guest, but if they don't allow you to smoke in their house they are not a rude guest.

　　Guests in China also have special habits. Some Western people may not adapt to these habits very soon. Thankfully my wife is Chinese so whenever we visit a Chinese family she tells me to buy them a gift. However giving a gift to a host is not always necessary in my country. So if you invite international guests to your home don't be too surprised if they don't bring you a gift. 

　　In China you probably won't need to change the guest-host relationship very much because you will probably only be the host and Chinese are naturally very good hosts. If Western hosts invite you to their house, try not to be too surprised if their style of treating you is not what you have expected.