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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.
The human brain is one of the most complex structures in nature. Scientists study it to understand how people think, learn and remember information. The brain contains billions of nerve cells that communicate with each other through electrical signals. Modern research shows that regular physical activity can improve memory and concentration. In 2010, researchers discovered that even short periods of exercise could influence brain function. Another interesting fact is that the human brain uses about 20% of the body’s energy, although it makes up only a small part of body weight. Scientists continue to explore how sleep, food and emotions affect this important organ. These studies may help doctors develop new methods for treating brain disorders in the future.