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Task 1. You are going to read the text aloud. You have 1.5 minutes to read the text silently, and then be ready to read it aloud. Remember that you will not have more than 2 minutes for reading aloud.

Trees absorb carbon dioxide from the air and give out oxygen in return. In some parts of the world, such as Asia and South America, trees are threatened not by pollution, but by people. The rainforests are destroyed for firewood and building materials. If we lose tropical forests, it will become more difficult to breathe, because they provide 50 percent of the world's annual production of oxygen. With more carbon dioxide in the air, the temperature on the planet will rise and this will cause global warming. How can the problems of air pollution be solved? First of all, people should try to use alternative sources of energy, such as solar, water or wind energies, or at least to burn smokeless fuels.