单项选择题


Questions 11 to 13 are based on the following passage. At the 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 jets

A.They bumped into each other over a swimming pool.
B.They avoided each other by turning in different direction.
C.They narrowly escaped crashing into each other.
D.One plane climbed above the other at the critical moment.