Computers are useful machines．They can help people a lot in their daily life ． For example，they can help people to save much time to do much work，and they can help people to work out many problems easily．Our country asks everyone to learn to use computers before the twenty-first century，except the old people．

    Today more and more families own computers ． Parents buy computers for their children．They hope computers can help them improve their studies in school．Yet，many of their children use computers to play games，to watch videos or to chat．Computers can not help children to study but make them fall behind．So computers are locked in boxes by parents．

    In some other countries，even some scientists also hate computers．They say computers let millions of people lose their jobs or bring them a lot of trouble．Will computers really bring trouble to people or can they bring people happiness? It will be decided by today's students themselves!

    Teeth are a very important part of our bodies. Good teeth help you eat things like apples. They also help you talk. The healthier your teeth are, the happier you will be.

    You can take care of your teeth by brushing and flossing（用牙线清理）them.

    But before that, you have to pick a good toothbrush. Be sure your toothbrush are soft enough Also, brushes with small heads are better. They can reach every corner of your mouth.

    Now it's time to brush. Brushing helps break down plaque（牙菌斑）Plaque is a kind of bad thing that can make small holes in your teeth. Brush your gums at a 45—degree angle（角度）This works well to clean both the teeth and gums.

    Learn how to floss your teeth. It gets rid of food in the spaces between your teeth. Your toothbrush can't get there. Move floss between each tooth gently back and forth once a day. It may feel a little difficult at first, but pretty soon. You'll be good at it!

Being happy

    One thing is for sure that money cannot always make a person happy. What can make you happy?

    Some people seem to be born happy. Nothing seems to get them down. They can always see the best of every situation and they seem to smile their way through life. Some people seem to have everything going well but they still do not seem to be happy. No matter what kind of person you are, you can do something to build happiness into your life.

    Listening to music

    Music can be a great way to make you feel happy. You can listen to it, or even take up playing an instrument.

    Keeping pets

    You may not have a pet of your own, but pets are so good at making people happy. Pets help people feel happy by being lovely, needing to be looked after, and maybe needing exercise, which is good for you, too.

    Staying fit and healthy

    Try to keep fit and healthy by exercising every day. There are lots of things that you can do to keep your body feeling fit. The great thing about exercise is that it releases chemicals called serotonin(复合胺) into your brain and these chemicals make you feel happy！

    Being kind and smiling at others

    Often it is the small thing that makes people happy. Try to be kind and smile at people. You will help them to feel happy and will build happiness for yourself.

    My wife and I spent two weeks in London last year. We went there in autumn. We think it is the best season to visit England. The weather is usually good and there aren't too many travellers in October.

    We stayed in a small hotel in the West End. It was convenient as we did most of our sightseeing on foot. Taxis were too expensive, we couldn't understand the bus routes, and my wife didn't like travelling on the underground. She said it made her feel sick.

    We went to look at the places which all visitors visit. We saw Buckingham Palace. We went shopping in Oxford Street and spent too much money. What we liked most, of course, was going to the theatre. We didn't have the chance to see such wonderful plays at home. A lot of people say English food is very bad. We didn't think so. It's true that most of the restaurants are French or Italian or Chinese, but we had some very good meals.

    In fact, we enjoyed our holiday so much that we have already booked(预订) again for this year. We're going to take an umbrella. I'm sure we'll need it sometimes.