4. What was used before the met have any drawbacks? 5. When was the idea of the decimal system realized? 6. What is the main unit of the metric system? How was it measured? 7. Were the units of area and volume defined as well? 8. Do shorter units have Greek or Latin prefixes? 9. What is a unit of mass? 10. Is there a difference between the metric system and the SI system? 11. When was the SI system introduced in the USSR? 12. What synonyms to the phrase 'metric system' can you find in the text? 2. Study the Active Vocabulary. Insert the missing words. 1. Can you cubic metre into cubic centimetres? 2. The between Moscow and Samara is 1049 3. 'Biology' is a word, and 'science' is a one. 4. The teacher one of his pupils with a difficult task. 5. Newton was a great who formulated laws of gravitation. 6. What is the of this swimming pool? The swimming pool is twenty-five long and two_deep, and ten wide. So, I twenty-five by two and by ten, and I get five hundred 7. The of ice is more than the of water as a liquid. But th of ice is less than the of water at 4°C. 8. Who was the first traveller who reached the South 9. The that studies stars is astronomy. 10. The units of the systems are a metre, a 3. Continue the following statements. 1. The British system of units, the metric system of units an International System of Units (SI) are ...