Unit
6
After Oil
Book 3
Look at the photo. How old do you think these gas pumps are?How much do you think a liter of gas cost when these pumps were in use?How would your life be different if gasoline cost twice as much as it does now?
A pair of vintage gas pumps in a desert landscape
Questions
Example Answer 1 Automobiles were first mass-produced around 110 years ago. The pumps don’t look that old, but I think the pumps are probably 70 or 80 years old.
Look at the photo. How old do you think  ...