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.
According to the news, the incident happened mainly because of
A．the maltreatment of the inmates. B．the poor living conditions. C．the transfer of a gang leader. D．the sentence of a murderer.