This week, our topic is pollution. What are the answers to all of our pollution problems? We asked two experts to give their views.

    ◇Forest Smith is a member of Green First, an environmental group.

    Our future on the Earth looks very bad. We are dumping waste on our land. We can't breathe the fresh air. The sea is polluted too.

    I visited some relatives recently in a small village. They grow their own food and cycle everywhere. They are not wealthy, but they are happy and healthy.

    We must close the factories producing useless products. That will reduce rubbish and air pollution. We must recycle more, give up all cars, and improve public transport.

    A big problem is overpopulation in big cities. We must give up big cities and factories, and go back to a simple way of life.

    ◇John Green is a scientist at a university.

    Things are not as bad as Forest says. We'll have a bright future. We don't need to give up cars but we need to invent better, cleaner engines.

    This won't stop the problem of traffic jams. So we need better public transport. We should also recycle more.

    But some things are getting better. My sister returned last month after living abroad for five years. She said, “Our old neighbourhood doesn't look the same as before－it is cleaner and greener now.”

    In a word, science has brought many improvements to our life.

⑴{#blank#}1{#/blank#} During the summer holiday, I visited Huangguoshu Waterfall in Guizhou with my cousins. What a relaxing trip!

⑵{#blank#}2{#/blank#} There are many kinds of shows on TV. As for me. I like talk shows and talent shows better because they are fun and I can learn a lot from them.

⑶{#blank#}3{#/blank#} Most of my friends play computer games in their free time. I usually exercise. I do some running at least four times a week.

⑷{#blank#}4{#/blank#} I made a new pen friend. She is in New York. She is tall and has long curly hair. She wears glasses. She is outgoing and creative.

⑸{#blank#}5{#/blank#} There are three big supermarkets in our town. The Johnson's has the best goods. The Lucky Fellow has the friendliest service. And the King Star plays the most wonderful music.

    Johnny Smith was a high school student who was good at Maths. He loved his computer. He came home early every day, and then he worked with it till midnight. But Johnny was poor at English indeed. He usually got "F" in his English. One day after school, Johnny joined his computer to the computer in his school office. The school office computer had the grades of all the students; the Maths grades, the science grades, the grades in arts and music and the grades in English. He found his English grade was an "F" again! Johnny changed it from "F" to "A". The next day, Johnny's parents looked at his school report card. They were very happy. "An 'A' in English!" said his father. "You are a very clever boy, Johnny." However, they didn't even know that Johnny was a hacker.

    Hackers know how to take information from other computers and put in false information by using a mode. They join their computers to others' secretly. School headmasters and teachers are worried about hackers, so are the police, for some people even take money from bank computer accounts and put it into their own ones. And they never need to leave home to do it! They are called hackers.