The world is divided into two main parts, the poor and the 1. The poor countries 2"the developing countries", which have special 3. Sometimes the land is too poor to grow anything
4. Many people never get enough food 5, and the children starve（饿死）. Help should be given by the rich countries, but rich countries have problems, 6. The air isn't fresh and the rivers are7 dirty to swim in or8 water from. Also the roads are too9 to drive along. And sometimes, large numbers of people 10 not have pleasant houses to live in. So something will have to be done about the problems.
Stop and listen! What do you hear? You may hear many different sounds. Some of those sounds may be noise. Noise is a loud or unwanted sound.
Many kinds of machines, such as motorcycles, jet planes（喷气式飞机）, farm tractors can cause noise, and power motors can cause noise. And, to some people, rock music is also a noise.
What happens to people who live near noisy machines or use them over a period of time? Doctors have found that these people have trouble in sleeping. And most importantly, constant（连续的）loud noise can cause loss of hearing.
Scientists use a unit of measure called a decibel（分贝）to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands measure over 120 decibels. Noise at such high level causes the greatest hearing loss.
The earth is about 4, 600 million years old. Modern man has lived on the earth for only 35, 000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.
Water Pollution
A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.
Air Pollution
In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sun- ny capital, but today it is always covered by thick brown clouds.
Soil Pollution
In order to have a good harvest, most of the farmers use chemicals too much in their fields. That's bad for the soil. But this kind of pollution is difficult to stop.
Hope for the Future
These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let's be greener people!
Can plants eat people? Probably not, but there are many plants that eat meat. Some of them are big, and they can eat small animals. One famous meat-eating plant is the Venus flytrap（捕蝇草）.
The Venus flytrap is a very strange plant. It grows in dry parts of the United States. Its leaves are like the pages of a book. They can open and close very quickly. Inside the leaves, there are three small hairs. If a fly（苍蝇）touches one of the hairs, the leaf closes quickly. The fly cannot get out. In about half an hour, the leaf presses the fly until it is dead. Then, the plant covers the fly. Slowly, the plant eats the fly.
Why do plants do it? Most plants get what they need from the sun, the air and the ground. In some places, the ground is very poor. It doesn't have all these important things, especially nitrogen（氮）. Ani- mal meat has a lot of nitrogen, so some plants eat meat to get what they need. Let's hope that some of the bigger plants don't get the same idea!
Americans' Weekends
What do American families usually do on weekends? . Running, playing volleyball, biking and swimming are all popular sports. The weekend is also a time for American families to work in the yard（院子）, the garden or the house. . Sometimes some families spend the weekend painting their houses. They are busy on weekends, but they are very relaxed.
. They can go to the park, the zoo, the cinema and many other places they want to go.
. Sometimes they help their parents do some work at home and their parents will take them to the restaurant to have a good dinner..
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A. At weekends, some people like to stay at home. B. They think the weekend is the best time of a week. C. Many American families often do some sports on weekends. D. Children are also very happy on weekends. E. Children don't like weekends because they have a lot of homework to do. F. They can play games, fly kites and play any ball games. G. Many families plant（种植）flowers and vegetables in the garden. |
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Kinds of pollution |
There are many kinds of pollution around us such as air pollution， water pollution，noise/white pollution and rubbish pollution. |
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Results |
The environment on the earth is becoming worse and worse. |
要求：短文要求正确、流畅；词数80 个左右。
提示词：keep…clean and tidy，clean，sweep，throw rubbish into the dustbins，plant，so that，protect， try our best to do sth.
