Nearly all American students in colleges and universities pay for their education. There are many expenses. First of all, there is tuition (学费). At some schools, the tuition is very high, ten thousand dollars a year or more. At other schools, it may only be a few hundred dollars a year. At some community (社区) colleges, tuition is free. There are other expenses as well. Many students leave their homes to go to schools in other cities. They may live in dormitories or apartments (flats), and they must pay for it. Finally, students must buy textbooks for their courses. Some families start saving money for their children's education when the children are small. Many students work to save money for tuition. They can also get loans (贷款) from the government. They pay the money back to the government when they finish their education.

    Americans and Chinese have quite different views about how to treat friends.

    Friendships between Americans can be close and real, yet disappear soon. They don't feel hurt. If the same two people meet again, even years later, they pick up the friendship. This can be quite difficult for us Chinese to understand. Friendships between us develop more slowly but may become lifelong feelings, extending(扩展) deeply into both families.

    There is another difficult point for us to understand. Although Americans treat friends warmly in their personal everyday lives, they don't show their politeness to them if they are asked to spend a lot of time staying with friends. But in China, we are usually generous(慷慨) with our time. We, as hosts, will appear at an airport even in the middle of the night to meet a friend. We may take days of from our work to act as guides to our friends. It is opposite in America. Americans can't manage the time to do so much with a visitor outside their daily plans. They will probably expect the visitors to get to the hotels by themselves and expect the visitors to phone them there. Once the visitors arrive at their homes, the welcome will be full, warm and real.

    For Americans, it is often considered more friends to invite friends to their homes than to restaurants, except for business matters. Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. So accept their hospitality(款待) at home and enjoy your visit in America!

    Most teens need more than 9 hours of sleep each night. But about 1 in 4 teens has trouble in sleeping. Lack of sleep can affect everything from our feelings to how well we focus on tasks like studying. It can also influence sports performance, increase our chances of getting sick, and may lead to weight gain in some people.

    How can we get the sleep we need? Here are some ideas:

    Be active during the day. Get at least 60 minutes of exercise a day. Physical activity can decrease stress and help people feel more relaxed. Just don't work too close to bedtime because exercise can wake you up before it slows you down.

    Say goodnight to electronics. Experts suggest using the bedroom for sleep only. At least shut everything down an hour or more before lights out.

    Keep a sleep routine. Going to bed at the same time every night helps the body expect sleep. Creating a bedtime routine can improve this relaxation effect. Reading, listening to music, spending time with a pet, writing a diary or doing anything else can relax you.

    Expect a good night's sleep. Instead of worrying that you won't sleep, remind yourself that you can. Say "Tonight, I will sleep well." several times during the day. It can also help to practise breathing exercises or gentle exercises before bed.

    Everyone has a sleepless night once in a while. But if you regularly have trouble in sleeping and you think it's affecting your mood or performance, talk to your doctor.

Every country has its own way of cooking.

Most people in the United States like fast food, but if you think that {#blank#}1{#/blank#}, you are wrong. It's true that most Americans eat fast food for their breakfast and lunch, but {#blank#}2{#/blank#}. Parents see the importance of teaching their children how to cook, and most Americans say that home-cooked meals are the best.

{#blank#}3{#/blank#}. For example, baking（烘焙) is the most popular way of cooking in America. Most American families have ovens and {#blank#}4{#/blank#}. In planning a big meal, they try to cook meat, a few vegetables, some bread and often some sweet food.

{#blank#}5{#/blank#}. There are many kinds of foods in different colors, so the meal is healthy and looks beautiful, too.

Life in the future will be different from life today. Many changes will happen. But what will the changes be?

The population (人口) is growing fast. There will be more people in the world and most of them will live longer than people live now. 

Computers will be much smaller and more useful, and there will be at least one in every home. And computer studies will be one of the important subjects in school then. People will work fewer hours than they do now and they will have more free time for sports, watching TV and travelling. Travelling will be much cheaper and easier. 

There will be changes in our food, too. More land will be used for building new towns and houses for all the people. Then there will be less room for cows and sheep, so meat will be more expensive. Maybe no one will eat it every day. Instead (相反), they will eat more fruit and vegetables. Maybe people will be healthier. Work in the future will be different, too. Robots will do dangerous and hard work. Because of this, many people will not have enough (足够的) work to do. This will be a problem.