【单选题】

Questions 18 to 20 are based on the following passage.Atthe end of the passage, you will be given 15 seconds to answer the questions.

Now listen to the passage.
What happened to the two large jetsA．They bumped into each other over a swimming pool.
B．They avoided each other by turning in different directions.
C．They narrowly escaped crashing into each other.
D．One plane climbed above the other at the critical moment.