单项选择题


Questions 15 to 17 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.
It can be inferred that Scott was a hero because

A.he was a sea captain.
B.he crossed a river full of ice.
C.he saved the boat almost at the price of his life.
D.he saved many people with a tugboat.