Smog-choked Southern California (demands) them. It's a car for people who never want to go to (a) gas station again. But the fact is, for all the talk, selling (gas-less) machines has been a (hard-sell). A: demands B: a C: gas-less D: hard-sell

Smog-choked Southern California (demands) them. It’s a car for people who never want to go to (a) gas station again. But the fact is, for all the talk, selling (gas-less) machines has been a (hard-sell). A. demands B. a C. gas-less D. hard-sell

The cost of natural gas is significantly less than that of diesel and gasoline．

Now my house is less drafty and it helps a bit with the gas bill.

Small cars use less gas than large cars. The amount of gas that a car uses is ______________ to its size. A: forbid B: appropriate C: elated D: supply

Natural gas give less carbon dioxide than coal. A: up B: in C: down D: off

7. According to the Meatless Monday, what can people gain from eating less meat? A: Better physical conditions. B: Less household expenses on food. C: More greenhouse gas emissions. D: Less consumption of air.

A light(轻的) gas, such as hydrogen(氢), is much less dense(稠的) than air is at the same pressure.

If you smell gas, ______ the gas, leave the house, and call the gas company.

A Popularity and use of natural gas B Natural gas reserves and supply C Natural gas prices D Clean fuel of choice E Disadvantages of natural gas F Natural gas consumption Paragraph 2______