Today, I am very happy to have a meeting with you. At the meeting we will talk about the 1 we have these days. We all know the problems of 2 and the objects falling from windows are getting worse. We have received lots of letters about such problems. So   3 is time for possible ways to work out these problems.

    Some dog owners don't take care of their dogs well enough, and they let their dogs make mess on the roads and in gardens. This makes the environment 4. I would like to tell the dog owners that their behavior is too b ad, and at the same time they are making people 5 unhappy. We should keep the environment 6.

    It is reported that some people 7 rubbish out of the windows. It is dangerous because falling objects 8 hurt others. It is against the law. We should put up a notice to teach people not to do so. If it is found, we will record the names and address of those people who throw objects. Then, a warning will be given and 9 will be punished by law.

    A safe and comfortable living environment is important to us. 10 we try our best to care for our community, it will be a good place to live in. Thank you for your coming.

    Each one of us shares this planet with about seven billion others. And we all need1. People and products need to move from city to city and country to country. However, we all know2most cars, motorcycles, boats and planes cause air pollution. They are also noisy. This is a serious problem in many cities.3inventors are coming up with creative ideas to try to reduce the air pollution and noise.

    In many cities around the world, motorcycles are very4. Now Vietnam has around 33 million motorcycles and China has almost 120 million, Motorcycles are a faster and cheaper way to get around a city than5. Yet air pollution is a growing problem. In large cities, people complain it is difficult to breathe. To solve these problems, a US company designed an environmentally friendly motorcycle. It uses electricity as fuel (燃料). As a result, there is6pollution. It's also quiet and fast. This makes it a good choice for getting around a city.

    The Italian city of Venice is a city with only a few roads. There are no cars in the city centre.7cars, water taxis and buses carry people along the city's canals. However, they cause pollution,8to the water. English engineers Dick and Jem designed a solar powered(太阳能的) water taxi. The water taxi can run for a day after being charged.

    Planes also cause air and noise pollution. Designing an environmentally-friendly airplane is a real9. Some airplane companies have10to solve the problems. Swiss engineers have gone one step further. They developed a solar airplane. This plane holds the world record for the longest solar powered flight—1, 541 kilometres from Arizona to Texas in America.

    What is the most important invention of all time? Is it the written word that helps us to record information? Is it the telephone that lets us talk to people 1 all over the world? Is it the car that lets us travel at great speeds to meet 2? Umberto Eco, an Italian writer, thinks it is something quite different. He says the most important invention might be right in front of your 3. He is talking about a simple pair of glasses.

    Modern eye glasses were 4 about 1,000 years ago. They were more than just a convenient way 5. Before glasses, writers, scientists or teachers 6 could not see properly had to memorize everything. After about ten years of poor eyesight, they could not remember well enough 7 could not work. Glasses meant that people could work into their old 8. People who wanted to remember some information could 9 and read it. Eye glasses are one of the world's greatest inventions and were probably 10 by the people who designed the first telephones and cars.