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28
Verbs
1 2
1. involve
2. damage
3. decrease
4. find out
5. realize
a) harm
b) understand
c) include
d) slow down
e) discover
f) indicate
g) limit
Reading and discussing
THE BRAIN
*
- THE MOST POWERFUL COMPUTER IN THE
UNIVERSE!
Man has a lot to learn about the most powerful and complex part of the body -
the brain.
In the ancient times people did not think that the brain was the centre of mental
activity. Aristotle, the philosopher of ancient Greece, thought that the mind was
based in the heart. It was not until the 18
th
century when people realized that the brain
was involved in the working of the mind.
During the 19
th
century scientists found out that when certain parts of the brain
were damaged men lost ability to do certain things. It indicated that each part of brain
controlled a different activity. But modern research holds that it is not easy to say
what each part of the brain does.
In the past 50 years chemists and biologists have found that the way the brain
works is far more complicated than they had thought. E.g.**, over 100.000 chemical
reactions take place in the brain every second. The more scientists know, the more
questions they are unable to answer.
Earlier scientists thought that during lifetime the power of brain decreased. But
present day researchers have another opinion. As long as the brain is given plenty of
exercise it keeps its power.
Some people believe that we use only 1% of our brain full potential. But the
only limit on the power of the brain is the limit of what we think is possible. This
might happen due to the way we are taught. When we first start learning we are told,
for instance, to remember certain facts. Still, we are not explained how our memory
works and how to make the best use of it.
Currently, many discoveries have been made about the universe - the outside
world. And we must also look into the universe which is inside us - the human brain.
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