In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet. Questions 6 and 7 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions. Now listen to the news. The staff who work in public places would favor the ban because
A．they don’t have to inhale foul air. B．they don’t have to serve smokers. C．they will get more tips from non-smokers. D．there will be a rise on their salaries.