7. Прочитайте и укажите предложения, которые не соответствуют содержанию текста.

1. In the 19^th century and early 20^th century, such unwanted gas usually was burned off in the oil fields.

2. Town gas is a synthetically produced mixture of methane and other gases.

3. However, depending upon infrastructure considerations, it remains a future possibility.

4. Natural gas is commercially extracted from oil fields and natural gas fields.

5. The liquid thus formed may get trapped as the pores of the gas reservoir get deposited.

6. The world’s largest proven gas reserves are located in Russia.

7. The gas driven off from the coal was collected and distributed through town-wide networks of pipes.

8. The resulting liquid is called natural gas liquid (NGL).