单项选择题

Directions: You are going to hear four conversations. Before listening to each conversation, you will have 5 seconds to read each of the questions which accompany it. After listening, you will have time to answer each question by choosing A, B, C or D. You will hear each conversation ONLY ONCE. Mark your answers in your test booklet. Questions 11 ~ 13 are based on the following conversation. What did the speak want to tell us in this passage

A.One can benefit a lot from working with his father.
B.Manual laborers shouldn’t be looked down upon.
C.One should always do his job earnestly.
D.Teenagers tend to be careless.