The planet Earth is only a tiny part of the universe, but it's the only place where human beings can live.
Today, our planet is in serious danger. Acid rains, global warming, air and water pollution, overpopulation are the problems that threaten human life on Earth.
Who is to blame for the disaster? The answer is simple: all of us.
Our forests are disappearing because they are cut down or burnt. If this trend continues, one day we won't have enough oxygen to breathe.
The seas are in danger. They are filled with poison: industrial and nuclear waste, chemical fertilisers and pesticides. The Mediterranean is already nearly dead; the North Sea is following. The Aral Sea is on the brink of extinction. If nothing is done about it, one day nothing will be able to live in the seas.
Every ten minutes one kind of animal, plant or insect dies out for ever. If nothing is done about it, one million species that are alive today may soon become extinct.
Air pollution is another serious problem. In Cairo just breathing the air is dangerous — equivalent to smoking two packs of cigarettes a day. The same holds true for many Russian cities.
Factories emit tons of harmful chemicals. These emissions have disastrous consequences for our planet. They are the main reason for the greenhouse effect and acid rains.
An even greater threat are nuclear power stations. We all know how tragic the consequences of the Chernobyl disaster are.
Fortunately, it's not too late to solve these problems. We have the time, the money and even the technology to make our planet a better, cleaner and safer place. We can plant trees and create parks for endangered species. We can recycle litter. We can support green parties and put pressure on those in power. Together we can save the planet and all of us with it.
1) Where can you get information about the New England's first settlers in Washington DC?
2) Where are the capitol and the white house situated?
4) What is the official song of americans called?
5) Do all the states in the USA have their own flags, symbols and songs?
6) What does he know about "ghost towns"?
7) Which are the largest and the smallest states?
8) When were the first skyscrapers built?
9) Do americans travel a lot? Where do they usually spend their time?
10) Are there any interesting museums in Washington and New York?
1. Alexander works as a customs officer at Dovodedovo airport Customs. He has worked there for five years.
2. He is flying on a business trip to Vladivostok this Tuesday. He has a cousin there. He will stay at his place.
3. They look exhausted. They have been searching the cargo from China for hours.
4. We have known each other for a long time.
5. The K-9 enforcement team is searching the passengers in the baggage claim hall now. The dog has not sniffed out anything so far.
6. It is the first time the team has worked with this drug detector dog.
7. I rate that performance one of the best I have ever seen.
8. Customs officers at airports process lots of passengers, goods and mail every day.
9. I have been learning irregular verbs all afternoon.
10. This is the third time you have asked me the same question.
11. It is not as big as I expected.
12. Some fool let the dog out. – Who let that dog out? It’s aggressive.
13. We have learned enough to pass the exam. (The exam is still to come.)
14. We learned enough to pass the exam. (The exam is over.)