参考答案：A. About the sea adventure: It symbols the voyage of the mind in quest of the truth and knowledge of the universe; a spiritual exploration into man’s deep reality and psychology.
B. About the boat: It symbols the society, and the crew symbol all kinds of people with different social and ethnic ideas.
C. About the white whale: To the author, it symbols nature, is complex, unfathomable and beautiful. To the captain Ahab, it is evilness, is a wall. So he will lead all his crew to cut through the wall to dig out all the unknown, mysterious things behind it. To the narrator. Ishmael, it is a mystery.