Questions 32 to 35 are based on the passage you have just heard.

A．A more economical diesel fuel.
B．Characteristics of a new type of fuel.
C．Where a new energy source is located.
D．How to develop alternative energy sources.

A．Offering readers information about sports activities.
B．Persuading readers to try cheap ways of exercise.
C．Attracting potential athletes to register for sports events.
D．Asking people to donate in order to develop public sports.