Questions 18 to 20 are based on the following
passage. At the end of the conversation, you will be given 15 seconds to answer
the questions. Now listen to the passage.
Which of the following is hue
A．Man should not protect the chicken and sheep they raise. B．The species mentioned has disappeared on the earth. C．Man’s killing of wild animals can be justified. D．Man should realize the earth is not his alone.