Questions 26 to 28 are based on the passage you have just heard.

A．It’s because there are many developing nations.
B．It’s because people use too many man-made materials.
C．It’s because we have more and more industry.
D．It’s because we are building more vehicles.

A．To interest students in a career in counseling.
B．To recruit counselors to work in the placement office.
C．To inform students of a university program.
D．To convince local merchants to hire college students.