3. Read and listen to the article. Complete the article with numbers and measurements from exercise 2.
(Đọc và nghe bài viết. Hoàn thành bài viết với các số và phép đo từ bài tập 2)
There are many amazing stories of human survival, but actually our bodies are very fragile and do not cope well with extremes. Polar explorers can cope with temperatures of (1) ____________, but only if they keep warm. Most people will collapse if their body temperature drops by only (2) ____________ and if it drops by (3) ____________, they'll die. Heat can be just as dangerous. Temperatures of 35°C are safe, provided humidity is not above (4) ____________. High altitudes are dangerous too. We pass out when the pressure falls below (5) ____________ of normal atmospheric pressure. This happens at about (6) ____________ metres. Climbers can go higher because their bodies gradually get used to it, but no one survives for long at 8,000 metres. At high altitudes, lack of oxygen is another problem. At ground level, about (7) ____________ of the air is oxygen. If that falls below (8) ____________, we die.
Bài Làm:
There are many amazing stories of human survival, but actually our bodies are very fragile and do not cope well with extremes. Polar explorers can cope with temperatures of (1) -40℃, but only if they keep warm. Most people will collapse if their body temperature drops by only (2) 2℃ and if it drops by (3) 4℃, they'll die. Heat can be just as dangerous. Temperatures of 35°C are safe, provided humidity is not above (4) 80%. High altitudes are dangerous too. We pass out when the pressure falls below (5) 60% of normal atmospheric pressure. This happens at about (6) 5,500 metres. Climbers can go higher because their bodies gradually get used to it, but no one survives for long at 8,000 metres. At high altitudes, lack of oxygen is another problem. At ground level, about (7) 21% of the air is oxygen. If that falls below (8) 6%, we die.
