Question

Science has learnt a great deal from polar expeditions. For instance, we now know a lot more about the effects polar conditions have on a person's mind and body. In the early days, explorers often went mad. One cause of this madness was later discovered" when people aren't used to living in extreme cold, their bodies use up a lot of energy to keep warm and this gets rid of all the vitamins in the body. The brain,deprived of vitamins,can't work normally , at least until the body gets used to the cold. After a certain period, the body adapts itself to its new environment and makes the most of whatever vitamins are available. The time spent in total darkness also has a negative effect on people's minds. Winter in polar regions is characterised by permanent night and lasts several months. Human beings are not used to spending long periods of time in the dark. In northern latitudes people get depressed during the dark winter months.Now we know that this depression- known as sad ( Seasonal Affective Disorder) - can be reduced by the use of sun lamps. Low temperatures can cause any part of the body to freeze. This painful condition is called frostbite. Although the body does get used to functioning in low temperatures, the danger of frostbite is always there if temperatures fall below freezing point. Nowadays, polar explorers carry medication which they can take to allow the blood to flow and slowly defrost the affected parts. Another common disorder is altitude sickness. The ice is sometimes more than three kilometres thick, which makes Antarctica one of the highest regions in the world. At that altitude there is little oxygen, so headaches, vomiting and dehydration the symptoms of altitude sickness -- are common. After about a year at high altitude, the body gets used to the lack of oxygen in the air. It compensates by storing more oxygen in the blood.  
5.Find words in the text to match the definitions.
1.To take something away from somebody
_ _ _ _ _
2.To make something suitable for new coditions
_ _ _ _
3. A long,organised journey made for a specific purpose _ _ _ _ _ _ _ _
4.A drugs used to treat an illness. _ _ _ _ _ _ _ _
5.This word describes something which hurts a lot.
_ _ _ _ _
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Answer 1

1. deprived
2. adapt
3. expedition
4. medication
5. frostbite

Sper să nu fie prea târziu.