For many years, we couldn't talk with the deaf. These deaf people couldn't use a spoken language.

    But beginning in the 1700s, the deaf were taught a special language. Using this language, they could share thought sand ideas with others. The language they used was a language without sound. It was a sign language.

    How did this sign language work? The deaf learnt to make certain movements with their hands, faces and bodies. These movements stood for things and ideas. People might move their forefingers accross their lips. This meant "you are not telling the truth". They might tap their chin with three fingers. This meant "my uncle".

    The deaf learned to see a finger alphabet. They used their fingers to make the letters of the alphabet. In this way, they spelled out words. Some deaf people could spell out words at a speed of 130 words per minute.

    The deaf don't use the sign language andfinger spelling as much as they once were. Today, the deaf learn to understand others by watching their lips. They also learn how to speak.

    In Europe, small cars have always been more popular than large cars. In the United States, large cars and midsize cars are more popular than smaller cars. As a result, European automakers used to make different kinds of small cars while American automakers used to build bigger, heavier cars. However, these days, automakers in both America and Europe produce cars of different sizes. This is because most automakers export their cars all over the world.

    The price of gasoline (汽油)is one reason for differences in car choices. Since gasoline is more expensive in Europe, many Europeans want smaller, lighter cars that will travel a long way on a gallon（加仑）of gasoline.

    Other reasons also enter into the big or little car decision. Many European cities have narrow, winding（弯曲的） streets. In these cities a small car is easier to control than a large one.

    For a long time, few Americans bought small cars. Instead they chose large cars, because these roomy cars were more comfortable for large families and long trips. Some people also liked the powerful engines（发动机） that large cars had. Since gasoline was cheap, drivers did not mind that the large cars used a lot of gasoline.

    But in the 1970s, there were gasoline shortages in the United States. The price of gasoline went up. Though large cars were still more popular than smaller cars, sales of small cars increased. Some people also bought small cars because these cars caused less air pollution than larger cars.

    Today, Americans' car preferences are still changing. Though Americans are still buying many small cars, the fastest growing sales are for certain kinds of large cars. These types of cars are called minivans and sport utility vehicles(SUV). They are very popular today. But of course, that could change tomorrow.

    AAAGH! The Generation 90s is coming! Wearing earphones, using complex Net language and constantly text messaging friends, the Gen-90s following the Gen-80s begin to make their world debut (初次登台).

    Each generation or age group has its own symbols and lifestyle. Read on and judge for yourselves if you fit the Gen-90s group.

Earphones—These little devices seem to grow on the heads of the Gen-90s. They might lead to MP3, MP4 or MP101 players, giving these young people a plugged-in, cool and perhaps self-addicted look, of course, life is not always music to the ears.

Martian language—They have created their own code-like online language. It's a mixture of English, Japanese and Chinese that perhaps only Martians can understand. This is an imaginative generation, though they need to be careful to keep it out of their term papers.

Self-Portrait— Saying "cheese" to their own digital cameras is usual for this generation. A little bit of narcissism (自恋) never hurts anyone. It helps them reflect a little on their own lives．But be aware of the risks of posting private photos online.

Text-messaging —They can type their mobile phones as fast as they can speak. This is a generation that respects efficiency. However, oral communication is important and will never go out of style.