单项选择题

You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.
Questions 11~13 are based on the following passage.
What did the speaker 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.