Have you ever wondered what goes through your mind when you choose where to sit in a new classroom? Or in a waiting room full of strangers? Or on a bus? Researchers have found out some interesting facts.

    Girls sit by girls and boys sit by boys. Adults sit together and young people choose another young person to sit near. But it goes further than this. We even choose to sit near someone who looks like us. People with glasses are more likely to sit near other people with glasses. People with long hair sit closer to other people with long hair.

    We seem to believe that people with similar habits or hobbies will share similar experiences and we are more likely to be accepted by people like ourselves, or even, we think we may be safer with people who look like us. Sometimes that's true but it's a pity if we always stay with the same people, the same group. The danger in always staying in our comfort zone (舒适区) is that we just recycle the same opinions, the same tastes and the same ideas. We lose the chance to learn something new, find out interesting things, hear funny stories and discover differences.

    When we always stay with the same people, how can we break down the barriers which prevent us from getting to know people with different ideas? And how can we avoid the ignorance (无知) ? If you want to live in a society that opens to changes , new things and different opinions ,be the cat among the pigeons(鸽子).

    Move out of your comfort zone. Go and sit next to someone different. And don't just sit there in silence. Say hello. Ask a question. Start a conversation. That's how we make friends. That's how we learn about people. That's how we open our minds to new ideas. That's how we live an exciting life.

you it, please?

breakfast?

A

Imagine the situation. You are driving alone in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device (装置) which uses satellites (卫星) to find the user's position (位置).It can find your position to within 20 metres. A GPS cannot start your car, but at least you will know where you are.

GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.

    There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates (计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well.

    Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate (精确的）.There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.

— At nine o'clock.