home more for fun, and children and parents are becoming better acquainted. The stores report a booming business in parlor games, hobby materials, books, musical instruments and albums.

　　People have lost their pale indoor look. The revival of the lost art of walking has brought a healthy pink back to many a cheek. This return to the heels has revolutionized the clothing styles-people now need to be ready for all kinds of weather.

　　These conditions, however, may not last. Already our clever chemists are at work on new synthetic fuels which, they say, will put us right back where we were-on wheels. Shall we wish them success or not?

21.Which of the following is NOT a result of the gas price rising?

A. More people prefer to travel on public transportation which costs less than driving cars.

B.People return to the traditional exercise of walking, which helps them to look healthier.

C. People shop in nearby stores without having to drive, so small businesses are declining.

D. The auto industry has been forced to develop new models which are more economical.

22.The purpose of writing this passage is ______.

A.to show the chain reaction of the rising gas price

B.to discuss whether it's necessary to work on new fuels

C.to warn people not to use too much gasoline

D.to picture what life will be like if gas runs out

23.What is the best title for this passage?

A. New Fuels on the Way

B. Cars or Bicycles, That Is a Question

C. End of the Good Old Days

D. From Wheels to Heels