You will hear one dialogue or monologue. Before listening, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C, or D. You will hear ONLY ONCE.
What is the main subject of this conversation

A. Patterns of erosion in different mountain ranges.
B. Forces that made the Grand Canyon.
C. The increasing pollution of the Colorado River.
D. The sudden appearance of the Grand Canyon.

A. Tickets.
B. An evening show.
C. Tomorrow’s performance.
D. A canceled movie.