Directions: In this section,you will hear two passages.At the end of each passage,you-|||-will hear three questions.Both the passage and the questions will be spoken only once.-|||-After you hear a question,you must choose the best answer from the four choices marked-|||-A),B),C)and D).-|||-Passage One-|||-Questions 13 to 15 are based on the passage you have just heard.-|||-13.A)You are very impolite. B)It is acceptable.-|||-C)It is better than early arrival. D)People worry about you.-|||-14.A)It helps to understand cultural beliefs and values.-|||-B)It provides a source of scientific imagination.-|||-C)It makes people realize the preciousness of time.-|||-D)It reveals the human history of measuring time.-|||-15.A)Cultural differences in making use of time.-|||-B)A theoretical explanation of the origin of time.-|||-C)Different views of how time comes and goes.-|||-D)The changing understanding of time in history.