Questions 15 to 17 are based on the following passage.
At the end of the passage, you will be given 15 seconds to answer the
questions. Now, listen to the passage. What is the possible mason for the candidates fail to get jobs at the BBC
A.Because they are not qualified engineers. B.Because they have had little exposure to high level of sounds. C.Because their stereo systems are poor. D.Because they suffer from hearing loss.